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File:Solar Eclipse May 20,2012.jpg
Jumat, 2026-05-01 18:35:33

2222 1704 Sunspot #1484 324 71 151 153 2222 1704 sunspot #1486 926 582 99 142 2222 1704 sunspot #1486 924 518 311 287 4777 4777 w:sunspot#1486 2046 1640...

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File:2012 Transit of Venus from SF.jpg
Kamis, 2024-11-14 03:15:54

1563 1360 165 127 2824 2824 w:sunspot#1493 805 1125 306 226 2824 2824 w:sunspot#1494 885 1605 287 221 2824 2824 w:sunspot#1497 1520 193 331 292 2577 2577...

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File:Sunspot butterfly with graph.gif
Senin, 2025-12-08 19:48:12

showing paired pattern of sunspots. Graph shows sunspot numbers. Spörer's law noted that at the start of an 11-year sunspot cycle, the spots appeared...

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File:Sunspot butterfly graph.gif
Selasa, 2025-10-21 00:04:42

(135177 bytes) Butterfly diagram showing paired pattern of sunspots. Graph shows sunspot numbers. {{PD-USGov-NASA}} Source: http://science.msfc.nasa...

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File:Sunspot-number.png
Selasa, 2025-10-21 00:04:50

(red) Average monthly sunspot data: http://sidc.oma.be/DATA/monthssn.dat archive copy at the Wayback Machine Leland McInnes at the English Wikipedia,...

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File:Sunspots on sun.jpg
Sabtu, 2024-08-17 18:27:57

Image:Sunspot with Earth Comparison.jpg (excerpt extracted for just solar-disk image). Variations: with closeup of upper sunspots: Image:Sunspot with Earth...

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File:Sunspot Numbers German.png
Selasa, 2025-10-21 00:04:46

summarizes the 400 years of regular sunspot number observations. Since ~1749, continuous monthly averages[dead link] of sunspot activity have been available...

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File:Carbon14-sunspot.svg
Selasa, 2025-10-21 00:04:25

Sunspots Talk:Solar variation] 2006-11-21 22:57 Leland McInnes 1052×600× (342251 bytes) Correlations between <sup>14</sup>C and sunspot activity...

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File:Sunspot 15.jpg
Minggu, 2026-02-01 01:12:37

Attribution-Share Alike 3.0 truetrue English object of statement has role: photographer author name string: sunspot 15 Wikimedia username: Sunspot 15...

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File:Sunspot 1112.jpg
Minggu, 2026-03-01 01:32:23

1167 1304 154 106 2048 2048 Sunspot 1112 English applies to jurisdiction: United States determination method or standard: work of the federal government...

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File:Rare spiral sunspot (noao-4042).tiff
Sabtu, 2025-05-17 06:31:56

spiral-shaped sunspot was captured by National Solar Observatory astronomers on February 19th 1982, using the Kitt Peak Vacuum Telescope. Sunspots are normally...

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File:Temp-sunspot-co2.svg
Senin, 2026-01-12 14:14:21

temperature, atmospheric CO2, and sunspot activity since 1850. Simple English Graph: Global temperature, atmospheric CO2, and sunspot activity since 1850. determination...

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File:Sunspot-co2.jpg
Kamis, 2025-12-25 07:30:56

uk/cru/data/temperature/hadcrut3gl.txt archive copy at the Wayback Machine (orange) Sunspot data:http://sidc.oma.be/DATA/yearssn.dat archive copy at the Wayback Machine...

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File:Changes in total solar irradiance and monthly sunspot numbers, 1975-2013-da.png
Selasa, 2025-10-21 00:04:27

the following images: File:Changes in total solar irradiance and monthly sunspot numbers, 1975-2013.png licensed with Cc-zero 2014-11-21T07:49:20Z Enescot...

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File:Christoph Scheiner - Sunspot diagram - Tres epistolae des maculis solaribus, 1612.jpg
Selasa, 2025-12-02 16:36:08

Domain Mark 1.0falsefalse English Christoph Scheiner's sunspot diagram from his book on sunspots Tres epistolae des maculis solaribus, 1612. determination...

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File:ALMA observes a giant sunspot (3 millimetres) (eso1703b).jpg
Sabtu, 2025-12-20 19:30:48

English This ALMA image of an enormous sunspot was taken at a wavelength of 3 millimetres. Sunspots are transient features that occur in regions where...

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File:Veronica Water advertisement March 1916 Sunspot magazine.jpg
Selasa, 2024-01-23 08:56:22

English Veronica Water advertisement March 1916 Sunspot magazine...

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File:Temp-sunspot-co2-ru.svg
Jumat, 2026-05-08 01:56:49

the following license: English Global average temperature, atmospheric CO2, and sunspot activity since 1850. determination method or standard: SHA-1...

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File:ALMA observes a giant sunspot (1 25 millimetres) (eso1703a).tiff
Sabtu, 2025-12-20 19:30:20

English This ALMA image of an enormous sunspot was taken at a wavelength of 1.25 millimetres. Sunspots are transient features that occur in regions where...

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File:Graphs demonstrating improved agreement between Old and New Sunspot Numbers (iau1508b).jpg
Sabtu, 2025-05-17 03:52:38

shows the level of disagreement between the old Wolf Sunspot Number (blue) and the old Group Sunspot Number (red). The lower graph demonstrates the increase...

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File:Graphs demonstrating improved agreement between Old and New Sunspot Numbers (iau1508b).tif
Sabtu, 2025-05-17 03:52:38

shows the level of disagreement between the old Wolf Sunspot Number (blue) and the old Group Sunspot Number (red). The lower graph demonstrates the increase...

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File:Sunspot Numbers-fr.svg
Selasa, 2025-10-21 00:04:48

sunspot numbers: A new solar activity reconstruction. Part 1.". Solar Physics 179: 189-219. Hoyt, D. V., and K. H. Schatten (1998b). "Group sunspot numbers:...

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File:Rare spiral sunspot (noao-4042).jpg
Sabtu, 2025-05-17 06:31:56

spiral-shaped sunspot was captured by National Solar Observatory astronomers on February 19th 1982, using the Kitt Peak Vacuum Telescope. Sunspots are normally...

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File:Neolamprologus brevis sunspot 2049.jpg
Senin, 2025-08-11 22:22:03

English Sunspot cichlid (Neolamprologus brevis) German Schneckenbuntbarsch (Neolamprologus brevis) Latin Neolamprologus brevis Swedish Neolamprologus...

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File:ALMA observes a giant sunspot (3 millimetres) (eso1703b).tiff
Sabtu, 2025-12-20 19:30:46

English This ALMA image of an enormous sunspot was taken at a wavelength of 3 millimetres. Sunspots are transient features that occur in regions where...

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File:The Newly Calibrated sunspot Group Number over the last 400 years (iau1508c).tif
Sabtu, 2025-05-17 03:55:25

the sunspot Group Number as measured over the past 400 years after to the new calibration. The Maunder Minimum, between 1645 and 1715, when sunspots were...

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File:Sunspots-gn-yr-total-smoothed-en.svg
Rabu, 2026-06-03 16:35:52

Sources: Frédéric Clette et al.: Revisiting the Sunspot Number: A 400-year perspective on the solar cycle. In: Space Sciences Series of ISSI - The Solar...

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File:Maunder, E.W. - Distribution of the latitude of sunspot centres (butterfly diagram, 1877-1902), 1904.jpg
Selasa, 2025-10-21 00:04:31

Commons Public Domain Mark 1.0falsefalse English Maunder, E.W.: Distribution of the latitude of sunspot centres (butterfly diagram, 1877-1902), 1904...

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File:Zurich sunspot number since 1750.png
Selasa, 2025-10-21 00:04:57

refer to en.wikipedia. 2005-06-06 17:07 SEWilco 800×600× (13911 bytes) [[Sunspot number]] since [[1750]]. {{PD-USGov-NASA}} http://science.nasa...

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File:The Largest Sunspot Group (noao0114).jpg
Sabtu, 2025-05-17 06:40:24

English This picture of the largest sunspot group in a decade shows the Sun as seen by a film camera at the National Science Foundation's McMath-Pierce...

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File:The Newly Calibrated sunspot Group Number over the last 400 years (iau1508c).jpg
Sabtu, 2025-05-17 03:55:25

the sunspot Group Number as measured over the past 400 years after to the new calibration. The Maunder Minimum, between 1645 and 1715, when sunspots were...

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File:Sunspot with exceptional detail (noao-5016).jpg
Sabtu, 2025-05-17 06:39:18

English Two white light images of a sunspot, using different exposures, and obtained during exceptionally good seeing conditions at Kitt Peak. determination...

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File:Sunspot Amusements, Ilfracombe - geograph.org.uk - 5442484.jpg
Minggu, 2024-10-27 09:25:53

Creative Commons Attribution-Share Alike 2.0 Generic license. Attribution: Sunspot Amusements, Ilfracombe by Jaggery You are free: to share – to copy, distribute...

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File:James Nasmyth (1808-1890) - Sunspot - 1899-61 - Science Museum.jpg
Selasa, 2025-04-29 02:40:31

English described at URL: https://artuk.org/discover/artworks/sunspot-179899 operator: Art UK...

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File:Sunspot with spectrum (noao-6031).tiff
Minggu, 2025-03-16 23:31:57

English A complex sunspot picture, taken at 15:30 hours UT on 4th July 1974. The vertical black line on the white light image (left) indicates the location...

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File:SDO Video Toolkit (SVS14126 - Giant Sunspot track HSO mkII).webm
Minggu, 2025-08-03 19:59:11

view in the SDO Helioseismic and Magnetic Imager (HMI) of a very large sunspot group transiting the solar disk in October of 2014. This spot was the visible...

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File:William Herschel - Sunspot drawings, Observations Tending to Investigate the Nature of the Sun 2, 1801.jpg
Senin, 2026-05-04 18:59:43

0/PDMCreative Commons Public Domain Mark 1.0falsefalse English William Herschel: Sunspot drawings, Observations Tending to Investigate the Nature of the Sun 2,...

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File:Sunspots-reconstructed-0-2015-en.svg
Rabu, 2026-02-04 20:09:01

DOI:10.1051/0004-6361/201423391 Frédéric Clette et al.: Revisiting the Sunspot Number: A 400-year perspective on the solar cycle. In: Space Sciences Series...

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File:Sunspot with exceptional detail (noao-5016).tiff
Selasa, 2024-08-13 22:24:20

English Two white light images of a sunspot, using different exposures, and obtained during exceptionally good seeing conditions at Kitt Peak. determination...

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File:Strongest sunspot in a decade (noao-03635).tiff
Sabtu, 2025-05-17 06:38:00

English The most vigorous sunspot activity in a decade is shown here at two different wavelengths, recorded at the Dunn Solar Telescope at the Sacramento...

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File:The Largest Sunspot Group (noao0114).tiff
Senin, 2025-09-15 04:38:02

English Picture of the largest sunspot group in a decade as seen by a film camera at the National Science Foundation's McMath-Pierce Telescope at Kitt...

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File:Inouye Solar Telescope Releases First Image of a Sunspot (NSO-DKIST-first-suspot).tiff
Sabtu, 2025-05-17 06:17:26

English This is the first sunspot image taken on January 28, 2020 by the NSF’s Inouye Solar Telescope’s Wave Front Correction context viewer. The image...

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File:Sunspot Amusements, Burnham-on-Sea - geograph.org.uk - 5219326.jpg
Minggu, 2024-10-13 06:52:15

Creative Commons Attribution-Share Alike 2.0 Generic license. Attribution: Sunspot Amusements, Burnham-on-Sea by Jaggery You are free: to share – to copy...

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File:William Herschel - Sunspot drawings, Observations Tending to Investigate the Nature of the Sun, 1801.jpg
Senin, 2024-05-20 20:11:22

0/PDMCreative Commons Public Domain Mark 1.0falsefalse English William Herschel: Sunspot drawings, Observations Tending to Investigate the Nature of the Sun, 1801...

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File:Sunspot image in the Stokes parameters (noao-03308).jpg
Sabtu, 2025-05-17 06:39:18

English Images in the Stokes parameters I, V, U, and Q in an isolated sunspot that was located near the center of the solar disk. The four images shown...

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File:Sunspot Amusements, Wilder Road, Ilfracombe - geograph.org.uk - 2098806.jpg
Sabtu, 2024-10-12 06:09:01

Creative Commons Attribution-Share Alike 2.0 Generic license. Attribution: Sunspot Amusements, Wilder Road, Ilfracombe by Roger A Smith You are free: to share...

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File:Bournemouth, the BH2, a bus and a sunspot off the Hilton - geograph.org.uk - 5261592.jpg
Senin, 2024-10-14 15:11:31

Alike 2.0 Generic license. Attribution: Bournemouth: the BH2, a bus and a sunspot off the Hilton by Chris Downer You are free: to share – to copy, distribute...

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File:C.A. Young - Wolf sunspot numbers and earth magnetic activity 1770-1880, 1884.jpg
Sabtu, 2024-10-05 09:29:03

0/PDMCreative Commons Public Domain Mark 1.0falsefalse English C.A. Young: Sunspot numbers and earth magnetic activity 1770-1880, 1884. determination method...

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File:Sunspot, July 25th 1991 (noao-00581).tiff
Sabtu, 2025-05-17 06:39:18

English Sunspot from July 25th 1991, showing fiducial mark. This picture was used in the article by Wallace et al., Science, 268, 1155, 1995 entitled...

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File:Spectra of sunspot NOAA 10008 (noao-04538).tiff
Sabtu, 2025-05-17 06:37:18

the NSO Kitt Peak Vacuum Telescope at 869nm showing the disk position of sunspot NOAA 10008 on 29 June 2002. determination method or standard: SHA-1 described...

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File:Spectra of sunspot NOAA 10008 (noao-04538).jpg
Sabtu, 2025-05-17 06:37:18

the NSO Kitt Peak Vacuum Telescope at 869nm showing the disk position of sunspot NOAA 10008 on 29 June 2002. determination method or standard: SHA-1 described...

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File:Sunspot Numbers.png
Selasa, 2025-10-21 00:04:46

Please refer to the image description page for more information. English Timeline and trend of the number of Sunspots observed from 1600 to approx. 2025...

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File:Mirage of sunspot 978.jpg
Kamis, 2026-03-05 09:32:59

wikipedia.org/wiki/Mirage Mirage] of [http://en.wikipedia.org/wiki/Sunspot sunspot] #978 |Source=self-made |Date=12/14/2007 |Author= [https://sites.google...

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File:Sunspot as seen by the Vacuum Tower Telescope (noao-02643).jpg
Rabu, 2026-01-14 19:38:19

English False color picture of a sunspot taken with the National Solar Observatory's Vacuum Tower Telescope (now redesignated as the Richard B. Dunn Solar...

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File:Average graph (1855-1880) and butterfly graph (1877-1902) of sunspot latitude during the solar cycle.jpg
Selasa, 2025-10-21 00:04:23

0falsefalse English Average graph (1855-1880) and butterfly graph (1877-1902) of sunspot latitude during the solar cycle. determination method or standard: SHA-1...

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File:AO corrected sunspot (noao-04555).tiff
Sabtu, 2025-05-17 06:03:49

English Image of a sunspot with (top) and without (bottom) adaptive optics correction. The uncorrected image was tip/tilt stabilized. The picture was...

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File:Strongest sunspot in a decade (noao-03635).jpg
Sabtu, 2025-05-17 06:38:00

English The most vigorous sunspot activity in a decade is shown here at two different wavelengths, recorded at the Dunn Solar Telescope at the Sacramento...

Click to read more »
File:Sunspot, July 25th 1991 (noao-00581).jpg
Sabtu, 2025-05-17 06:39:18

English Sunspot from July 25th 1991, showing fiducial mark. This picture was used in the article by Wallace et al., Science, 268, 1155, 1995 entitled...

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File:Solar-cycle-sunspot-num-progression-7-4-25.svg
Sabtu, 2026-02-14 20:51:21

0/PDMCreative Commons Public Domain Mark 1.0falsefalse English Solar Cycle 25 Sunspot Chart applies to jurisdiction: United States determination method or standard:...

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File:Sunspots-reconstructed-0-2015-labels-en.svg
Sabtu, 2026-01-03 20:20:42

DOI:10.1051/0004-6361/201423391 Frédéric Clette et al.: Revisiting the Sunspot Number: A 400-year perspective on the solar cycle. In: Space Sciences Series...

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File:Sunspot image in the Stokes parameters (noao-03308).tiff
Sabtu, 2025-05-17 06:39:18

English Images in the Stokes parameters I, V, U, and Q in an isolated sunspot that was located near the center of the solar disk. The four images shown...

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File:Sunspot with spectrum (noao-6031).jpg
Sabtu, 2025-05-17 06:39:18

English A complex sunspot picture, taken at 15:30 hours UT on 4th July 1974. The vertical black line on the white light image (left) indicates the location...

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File:DKIST-First-Sunspot-with-scale.jpg
Sabtu, 2024-05-04 11:20:14

0 Creative Commons Attribution 4.0 truetrue English Inouye Solar Telescope Releases First Image of a Sunspot determination method or standard: SHA-1...

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File:Sunspot as seen by the Vacuum Tower Telescope (noao-02642).jpg
Rabu, 2026-01-14 19:38:19

English Picture of a sunspot taken with the National Solar Observatory's Vacuum Tower Telescope (now redesignated as the Richard B. Dunn Solar Telescope)...

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File:Doppler shifts of sunspot NOAA 10008 (noao-04539).jpg
Sabtu, 2025-05-17 06:10:14

6 nm showing a Doppler shift as a function of azimuth angle around the sunspot NOAA 10008 during a period of three days. The spot positions were 0.65...

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File:DKIST-First-Sunspot.jpg
Sabtu, 2024-05-04 11:20:15

0 Creative Commons Attribution 4.0 truetrue English Inouye Solar Telescope Releases First Image of a Sunspot determination method or standard: SHA-1...

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File:AO corrected sunspot (noao-04555).jpg
Sabtu, 2025-05-17 06:03:49

English Image of a sunspot with (top) and without (bottom) adaptive optics correction. The uncorrected image was tip/tilt stabilized. The picture was...

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File:Doppler shifts of sunspot NOAA 10008 (noao-04539).tiff
Sabtu, 2025-05-17 06:10:14

6 nm showing a Doppler shift as a function of azimuth angle around the sunspot NOAA 10008 during a period of three days. The spot positions were 0.65...

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File:Sunspot as seen by the Vacuum Tower Telescope (noao-02642).tiff
Rabu, 2026-01-14 19:38:21

English Picture of a sunspot taken with the National Solar Observatory's Vacuum Tower Telescope (now redesignated as the Richard B. Dunn Solar Telescope)...

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File:Sunspot, March 7-17 1989 (noao-03108).tiff
Sabtu, 2025-05-17 06:39:18

during the period March 7-17 1989. This series shows the evolution of a sunspot group as it moves around the Sun. The upper sequence, taken in white light...

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File:I, Q, U, V map of a sunspot (noao-04138).tiff
Sabtu, 2025-05-17 06:17:01

Sacramento Peak captured this (I, Q, U, V) Stokes parameters map of a sunspot on March 31st, 2002, even in its earliest, Phase I, configuration. determination...

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File:High frequency radio propagation charts for sunspot minimum and sunspot maximum (IA highfrequencyrad1231cent).pdf
Selasa, 2024-08-20 03:06:06

for sunspot minimum and sunspot maximum   (  ) Author Central Radio Propagation Laboratory Title High frequency radio propagation charts for sunspot minimum...

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File:Sunspot, March 7-17 1989 (noao-03108).jpg
Sabtu, 2025-05-17 06:39:18

during the period March 7-17 1989. This series shows the evolution of a sunspot group as it moves around the Sun. The upper sequence, taken in white light...

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File:Sunspot Amusements, Burnham-on-Sea - geograph.org.uk - 1557085.jpg
Minggu, 2025-01-05 10:34:56

BY-SA 2.0 Creative Commons Attribution-Share Alike 2.0 truetrue English Sunspot Amusements, Burnham-on-Sea object of statement has role: photographer author...

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File:I, Q, U, V map of a sunspot (noao-04138).jpg
Sabtu, 2025-05-17 06:17:01

Sacramento Peak captured this (I, Q, U, V) Stokes parameters map of a sunspot on March 31st, 2002, even in its earliest, Phase I, configuration. determination...

Click to read more »
File:Sunspot as seen by the Vacuum Tower Telescope (noao-02643).tiff
Rabu, 2026-01-14 19:38:20

English False color picture of a sunspot taken with the National Solar Observatory's Vacuum Tower Telescope (now redesignated as the Richard B. Dunn Solar...

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File:Sunspot AR11084 02Jul2010 SST.webm
Selasa, 2025-11-04 19:43:12

Commons Attribution-Share Alike 4.0 truetrue English 1 hour movie of a sunspot observed with the Swedish 1 metre Solar Telescope URL: https://commons...

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File:Sunspots-reconstructed-0-2015-de.svg
Minggu, 2026-01-04 02:14:49

DOI:10.1051/0004-6361/201423391 Frédéric Clette et al.: Revisiting the Sunspot Number: A 400-year perspective on the solar cycle. In: Space Sciences Series...

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File:Sunspots-reconstructed-0-2015-de-mca.svg
Minggu, 2026-01-04 02:14:49

DOI:10.1051/0004-6361/201423391 Frédéric Clette et al.: Revisiting the Sunspot Number: A 400-year perspective on the solar cycle. In: Space Sciences Series...

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File:Sunspot in solar chromosphere.gif
Minggu, 2026-03-08 00:29:07

org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Sunspot seen in solar chromosphere. Finnish Auringonpilkku kuvattuna kromosfäärin...

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File:Sunspots viewed via telescope with Herschel Wedge Aug 2024.jpg
Sabtu, 2025-11-01 07:15:29

holder of this work, hereby publish it under the following license: English Sunspots viewed through a telescope with a Herschel Wedge author name string: Quirkipedia...

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File:Changes in total solar irradiance and monthly sunspot numbers, 1975-2013.png
Jumat, 2026-01-30 20:52:29

approximate. See Hansen et al. for original data sources. For TSI and monthly sunspot numbers, data are given for the 365-day mean and smoothed mean, respectively...

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File:NASA's Illuminate Series (2024) (SVS14706).webm
Minggu, 2025-08-03 19:37:02

English Largest Sunspot in Almost a DecadeThis is the biggest sunspot we’ve seen in almost a decade!Sunspots are cooler, darker areas on the solar surface...

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File:Sunspots-reconstructed-0-2015-en-mca.svg
Minggu, 2026-05-17 05:05:54

DOI:10.1051/0004-6361/201423391 Frédéric Clette et al.: Revisiting the Sunspot Number: A 400-year perspective on the solar cycle. In: Space Sciences Series...

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File:Sunspot instrument of Christoph Scheiner (1573-1650).jpg
Selasa, 2025-09-09 12:53:30

English Engraving of an instrument to observe sunspots determination method or standard: SHA-1...

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File:Solar sunspot.jpg
Minggu, 2026-05-10 08:22:46

org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Solar sunspot and granulation Finnish Suuri auringonpilkkuryhmä ja auringon granulaatiota...

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File:Sunspot SST 05Sep2016.png
Senin, 2022-03-14 06:20:26

BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Sunspot observed with the Swedish 1-m Solar Telescope URL: https://commons.wikimedia...

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File:Prediction of annual sunspot numbers (IA predictionofannu11mcni).pdf
Minggu, 2024-08-18 06:35:53

Prediction of annual sunspot numbers   (  ) Author McNish, A. G. Lincoln, J. V. Title Prediction of annual sunspot numbers Volume CRPL-1-1 Publisher National...

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File:Britannica Spectroheliograph photo.jpg
Minggu, 2023-12-24 02:56:14

English Spectroheliograph of the sun showing right and left handed sunspot vortices. determination method or standard: SHA-1...

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File:Sunspot Solar Observatory From Ground.jpg
Minggu, 2025-11-23 22:58:25

Creative Commons Attribution-Share Alike 4.0 truetrue English Picture of the Sunspot Solar Observatory taken from the ground with a Nikon z6 author name string:...

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File:PIA18389-MarsCuriosityRover-MercuryTransitsSun-20140603.gif
Jumat, 2025-09-05 18:48:52

382 147 8 8 640 350 Sunspot 310 134 8 8 640 350 Sunspot English applies to jurisdiction: United States determination method or standard: work of the federal...

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File:Trends of characteristics of the ionosphere for half a sunspot cycle (IA jresv21n6p835).pdf
Minggu, 2024-08-18 02:37:56

Trends of characteristics of the ionosphere for half a sunspot cycle   (  ) Author Smith, Newbern Gilliland, Theodore R. Kirby, Samuel S. Title Trends...

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File:Big sunspot AR3363 during year 2023.jpg
Minggu, 2026-03-08 00:31:13

org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Big sunspot revealing lots of fine details on penumbral filaments, granulation, a light...

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File:Hales law diagram north-south-updated.svg
Minggu, 2026-04-19 01:09:01

license: English Updated image clarifying sunspot polarities (https://www2.hao.ucar.edu/education/pictorial/hales-sunspot-polarity-law) determination method...

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File:Sunspots visible by the naked eye on a winter morning.jpg
Kamis, 2026-05-07 22:06:35

the naked eye. This allows sunspots to be observed. The foto is proof that even in historic and prehistoric times, sunspots could be observed with the...

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File:Solar cycle.gif
Senin, 2025-05-26 07:09:49

variations of the sunspot number index. Three historical reconstruction are shown, namely the monthly sunspot number (orange), and yearly sunspot number (red)...

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File:Carbon14-sunspot-1000px.png
Senin, 2026-04-13 22:41:52

truetrue You may select the license of your choice. This is File:Carbon14-sunspot.svg but with the incorrect axis removed. English determination method or...

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File:Sunspots recorded by Galileo (iau1508a).jpg
Sabtu, 2025-05-17 03:55:07

the positions and sizes of a number of sunspots. Galileo was one of the first to observe and document sunspots. determination method or standard: SHA-1...

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File:Sunspot on a rowan sapling at Myrstigen.jpg
Jumat, 2025-10-24 01:37:57

BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Sunspot on a rowan sapling (Sorbus aucuparia) by Myrstigen hiking trail, Brastad...

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File:The Sun with sunspots (iau1508d).jpg
Sabtu, 2025-05-17 03:55:27

The Sun exhibiting a number of sunspots on 14 January, 2013, at 00:13 GMT. At the center sits a large cluster of sunspots, dubbed Active Region 11654, that...

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File:Sunspot butterfly diagram.svg
Selasa, 2025-10-21 00:04:41

Deutsch ∙ English ∙ +/− Basis is the corrected real area of a whole sunspot. E.g. this on the 1960-01-01 a value of 350 millionths of the visible Sun's...

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File:Sunspot Regions 2898 & 2900 - November 28 2021 (51711973438).png
Kamis, 2024-08-15 20:45:00

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot Regions 2898 & 2900 - November 28 2021 Flickr user ID: 53460575@N03 author...

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File:The Sun with sunspots (iau1508d).tif
Jumat, 2026-04-10 22:34:44

The Sun exhibiting a number of sunspots on 14 January, 2013, at 00:13 GMT. At the center sits a large cluster of sunspots, dubbed Active Region 11654, that...

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File:Sunspots recorded by Galileo (iau1508a).tif
Sabtu, 2025-05-17 03:55:07

the positions and sizes of a number of sunspots. Galileo was one of the first to observe and document sunspots. determination method or standard: SHA-1...

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File:Carbon-14 with sunspots since 1700.png
Rabu, 2025-11-12 16:47:50

(24073 bytes) Carbon-14 record for last 1,100 years (inverted scale). Sunspot record since A.D. 1700 shown in red. There is a 20-60 year delay for solar...

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File:Sunspot Group 2827 - May 30 2021 (51214901084).png
Kamis, 2024-08-15 20:45:00

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot Group 2827 - May 30 2021 Flickr user ID: 53460575@N03 author name string:...

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File:Sunspot Region 2827 - June 2 2021 (51220773011).png
Kamis, 2024-08-15 20:44:58

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot Region 2827 - June 2 2021 Flickr user ID: 53460575@N03 author name string:...

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File:Sunspot on an oak by Myrstigen.jpg
Jumat, 2026-05-22 20:29:12

BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Sunspot on an oak (Quercus robur) by Myrstigen hiking track, Brastad, Lysekil Municipality...

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File:Rudbeckia hirta 'Sunspot Yellow Bicolor' - 01.jpg
Selasa, 2024-09-17 01:35:59

Commons Attribution-Share Alike 4.0 truetrue English Rudbeckia hirta 'Sunspot Yellow Bicolor' author name string: Jeangagnon Wikimedia username: Jeangagnon...

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File:Rudbeckia hirta 'Sunspot Yellow Bicolor' - 02.jpg
Rabu, 2024-06-12 13:34:02

Commons Attribution-Share Alike 4.0 truetrue English Rudbeckia hirta 'Sunspot Yellow Bicolor' author name string: Jeangagnon Wikimedia username: Jeangagnon...

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File:White light, February 19th 1982 (noao-4041).jpg
Sabtu, 2025-05-17 06:45:23

light, whole disk, image of the Sun, showing a variety of sunspots, including a rare spiral sunspot. determination method or standard: SHA-1 described at...

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File:Sunspots NOAA 486 and NOAA 484, October 24th, 2003 (noao-04698).tiff
Sabtu, 2025-05-17 06:39:19

English Sunspots NOAA 486 and NOAA 484, October 24th, 2003. Picture by Dr Bill Livingston from the McMath-Pierce solar facility on Kitt Peak. For a close-up...

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File:Sunspots NOAA 486 and NOAA 484, October 24th, 2003 (noao-04698).jpg
Sabtu, 2025-05-17 06:39:19

English Sunspots NOAA 486 and NOAA 484, October 24th, 2003. Picture by Dr Bill Livingston from the McMath-Pierce solar facility on Kitt Peak. For a close-up...

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File:Sunspot-seeking radio-telescope, Zurich.jpg
Minggu, 2026-05-24 19:26:44

https://www.flickr.com/people/doctorow/ publication date: 24 March 2005 title: Sunspot-seeking radio-telescope, Zurich (English) author name string: Cory Doctorow...

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File:Sunspot Group 2827 - May 30 2021 (51215204155).png
Kamis, 2024-08-15 20:45:01

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot Group 2827 - May 30 2021 Flickr user ID: 53460575@N03 author name string:...

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File:Sunset Morogoro.jpg
Minggu, 2025-12-21 15:10:54

2403 1381 53 68 3888 2592 Sunspot English...

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File:Sunspot region 2827 - White Light (colorized) - June 2 2021 (51221548628).png
Kamis, 2024-08-15 20:44:59

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot region 2827 - White Light (colorized) - June 2 2021 Flickr user ID: 53460575@N03...

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File:Sun AR2835 sunspot in Hydrogen-alpha spectrum captured with an amateur telescope.gif
Kamis, 2023-10-05 07:31:46

Creative Commons Attribution-Share Alike 4.0 truetrue English Sun - AR2835 sunspot captured with a ground based amateur telescope in the Hydrogen-alpha spectrum...

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File:White light, February 19th 1982 (noao-4041).tiff
Sabtu, 2025-05-17 06:45:23

light, whole disk, image of the Sun, showing a variety of sunspots, including a rare spiral sunspot. determination method or standard: SHA-1 described at...

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File:Sunspot Region 2833 - June 17 2021 (51255031774).png
Kamis, 2024-08-15 20:44:59

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot Region 2833 - June 17 2021 Flickr user ID: 53460575@N03 author name string:...

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File:Sunspot Region 2833 - June 17 2021 (51255327665).png
Jumat, 2024-08-30 21:02:45

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot Region 2833 - June 17 2021 Flickr user ID: 53460575@N03 author name string:...

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File:Sunspot Regions 2898 & 2900 - November 28 2021 (51711698651).png
Senin, 2024-09-16 14:12:28

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot Regions 2898 & 2900 - November 28 2021 Flickr user ID: 53460575@N03 author...

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File:Sunspot butterfly diagram black.svg
Selasa, 2025-10-21 00:04:45

Deutsch ∙ English ∙ +/− Basis is the corrected real area of a whole sunspot. E.g. this on the 1960-01-01 a value of 350 millionths of the visible Sun's...

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File:Drawing of sunspots 04-01-1917.jpg
Selasa, 2026-05-12 12:28:38

English First drawing of sunspots from Mount Wilson Observatory, Ferdinand Ellerman, January 4, 1917 Slovenian Prva risba sončevih peg iz observatorija...

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File:Illustration of sunspots from “Ars Magna Lucis et Umbrae” 01.jpg
Sabtu, 2025-10-04 08:36:38

0/PDMCreative Commons Public Domain Mark 1.0falsefalse English Illustration of sunspots from “Ars Magna Lucis et Umbrae” determination method or standard: SHA-1...

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File:Sunspot Region 2827 - June 2 2021 (51221848565).png
Senin, 2024-09-09 18:44:12

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot Region 2827 - June 2 2021 Flickr user ID: 53460575@N03 author name string:...

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File:Drawing of sunspots Galileo Galilei 23-06-1613.jpg
Jumat, 2025-02-07 06:29:57

English The drawing of sunspots, Galileo Galilei, June 23, 1613 Slovenian Risba sončevih peg, Galileo Galilei, 23. junij 1613 determination method or standard:...

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File:Sunspot Regions 2898 & 2900 - November 28 2021 (51711973723).png
Kamis, 2024-08-15 20:45:00

BY 2.0 Creative Commons Attribution 2.0 truetrue 31 March 2024 English Sunspot Regions 2898 & 2900 - November 28 2021 Flickr user ID: 53460575@N03 author...

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File:Sun and sunspots.jpg
Senin, 2026-03-23 01:08:08

work, hereby publish it under the following license: English The Sun and sunspots Estonian Päike ja päikeseplekid author name string: Nielander Wikimedia...

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File:AR4294 Sunspot of December 2025 in H-alpha.png
Selasa, 2026-01-27 15:12:28

0 Creative Commons Attribution-Share Alike 4.0 truetrue English AR4294 Sunspot Group in H-alpha Spanish Grupo de manchas solares AR4294 en H-alfa author...

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File:Effective sunspot numbers, January 1961 through July 1962 (IA jresv67Dn1p37).pdf
Selasa, 2026-06-02 18:08:55

Effective sunspot numbers, January 1961 through July 1962   (  ) Author Chadwick, W.B. Title Effective sunspot numbers, January 1961 through July 1962...

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File:Sunspots and Earth for comparision.jpg
Rabu, 2026-04-29 10:30:32

org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Big sunspot group during solar maximum in year 2024 (cycle 25). Earth added for comparision...

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File:Faculae and Sunspots at Solar Maximum.tif
Sabtu, 2024-08-17 19:41:19

collected near solar maximum (April 2014). The small dark regions are sunspots and the brighter speckled regions around them are faculae. applies to jurisdiction:...

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File:Sunspots on the surface of the Sun image (noirlab1902c).tiff
Sabtu, 2025-05-17 06:39:19

English Sunspots on the surface of the Sun image determination method or standard: SHA-1 described at URL: https://noirlab.edu/public/images/noirlab1902c...

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File:Sunspots on the surface of the Sun image (noirlab1902c).jpg
Sabtu, 2025-05-17 06:39:19

English Sunspots on the surface of the Sun image determination method or standard: SHA-1 described at URL: https://noirlab.edu/public/images/noirlab1902c...

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File:A quick method for estimating the stage of the sunspot cycle (IA jresv65Dn6p637).pdf
Minggu, 2024-08-18 17:43:13

estimating the stage of the sunspot cycle   (  ) Author Chadwick, W.B. Title A quick method for estimating the stage of the sunspot cycle Volume 65D Publisher...

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File:David Hazeltine and Eric Alexander perform at the Artists' Quarter jazz club, Dec 21 2013.jpg
Sabtu, 2024-06-22 11:43:02

English author name string: Sunspot Soldier URL: https://commons.wikimedia.org/wiki/user:Sunspot_Soldier Wikimedia username: Sunspot Soldier determination method...

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File:A very high resolution calcium imaging session reveals incredible closeup sunspot details.gif
Rabu, 2026-01-21 21:14:31

very high resolution calcium imaging session reveals incredible closeup sunspot details. author name string: The.skyburner Wikimedia username: The.skyburner...

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File:Sunspots and very high frequency radio transmission (IA sunspotsveryhigh43nort).pdf
Sabtu, 2024-08-24 21:17:05

Sunspots and very high frequency radio transmission   (  ) Author Norton, Kenneth A. Title Sunspots and very high frequency radio transmission Volume...

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File:NASA, NOAA Announce That the Sun Has Reached the Solar Maximum Period (SVS14683 - 004 solar-cycle-25).jpg
Minggu, 2025-08-03 19:38:11

which is co-chaired by NASA and NOAA. Sunspot number is an indicator of solar cycle strength - the higher the sunspot number, the stronger the cycle. determination...

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File:Solar Activity Proxies.png
Kamis, 2025-11-27 03:20:21

activity during the last several hundred years. In red is shown the Group Sunspot Number (Rg) as reconstructed from historical observations by Hoyt and Schatten...

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File:Lew Tabackin playing tenor saxophone at the Artists' Quarter jazz club on November 16, 2013.jpg
Selasa, 2026-05-12 04:38:48

https://commons.wikimedia.org/wiki/user:Sunspot_Soldier author name string: Sunspot Soldier Wikimedia username: Sunspot Soldier heading: 109.076797 degree...

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File:Sunspots 11000 years.svg
Senin, 2025-12-22 07:11:27

truetrue You may select the license of your choice. English Reconstruction of sunspot numbers over the last 11,000 years French Reconstruction du nombre de tâches...

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File:Comparison of data on the ionosphere, sunspots, and terrestrial magnetism (IA jresv17n3p323).pdf
Jumat, 2024-08-16 03:49:32

the ionosphere, sunspots, and terrestrial magnetism   (  ) Author Judson, Elbert B. Title Comparison of data on the ionosphere, sunspots, and terrestrial...

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File:Ravi Coltrane (cropped).jpg
Kamis, 2022-10-27 19:43:30

Attribution-Share Alike 4.0 truetrue English object of statement has role: photographer author name string: Sunspot Soldier Wikimedia username: Sunspot Soldier...

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File:Ravi Coltrane and Francisco Mela.jpg
Jumat, 2023-07-21 04:03:41

Attribution-Share Alike 4.0 truetrue English object of statement has role: photographer author name string: Sunspot Soldier Wikimedia username: Sunspot Soldier...

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File:Little Ice Age and Sunspots.png
Sabtu, 2025-12-13 05:29:51

Creative Commons Attribution-Share Alike 4.0 truetrue English Graphs of sunspot number and northern hemisphere temperature since 800AD determination method...

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File:Sunspot TRACE.jpeg
Rabu, 2025-11-26 20:53:54

DescriptionSunspot TRACE.jpeg العربية: كلفةٌ شمسيةٌ التقطتها مركبةُ الفضاء TRACE التابعة لناسا. English: It was a quiet day on the Sun in September of...

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File:George Coleman at the Jazz Standard, October 2012.jpg
Minggu, 2025-11-02 17:01:13

object of statement has role: photographer author name string: Sunspot Soldier Wikimedia username: Sunspot Soldier determination method or standard: SHA-1...

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File:All Solar Cycles 2025.png
Kamis, 2025-06-26 17:18:58

0 truetrue English The graph of smoothed sunspot numbers. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory...

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File:McMath-Pierce Adaptive Optics (noao-04288).jpg
Sabtu, 2025-05-17 06:25:56

English 16-millisecond exposures of a sunspot at a wavelength of 990 nanometers, without (left) and with (right) adaptive optics. determination method...

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File:Sunspots NOAA 486 and NOAA 484, October 24th, 2003 (noao-04699).jpg
Sabtu, 2025-05-17 06:39:19

English A close-up view of sunspots NOAA 486 and NOAA 484, October 24th, 2003. Picture by Dr Bill Livingston from the McMath-Pierce solar facility on Kitt...

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File:AU MIc M-dwarf artist's conception.jpg
Minggu, 2024-10-06 03:19:58

star less than 0.7% the age of our Sun. The dark areas represent huge sunspot-like regions. applies to jurisdiction: United States determination method...

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File:Adaptive Optics at the McMath-Pierce (noao-03320).jpg
Sabtu, 2025-05-17 06:03:03

optics is illustrated by 100 simultaneous short-exposure images of a small sunspot at 1000nm and the corresponding wavefront sensor data. determination method...

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File:CarrothersAQ.jpg
Senin, 2024-02-05 12:01:20

object of statement has role: photographer author name string: Sunspot Soldier Wikimedia username: Sunspot Soldier determination method or standard: SHA-1...

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File:Relationships between radio propagation disturbance and central meridian passage of sunspots grouped by distance from center of disc (IA relationshipsbet27inte).pdf
Minggu, 2024-08-18 18:15:44

between radio propagation disturbance and central meridian passage of sunspots grouped by distance from center of disc   (  ) Author Interservice Radio...

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File:McMath-Pierce Adaptive Optics (noao-04288).tiff
Sabtu, 2025-05-17 06:25:56

English 16-millisecond exposures of a sunspot at a wavelength of 990 nanometers, without (left) and with (right) adaptive optics. determination method...

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File:Latest advances in weather forecasting at a long range by sunspots and planetary positions (IA latestadvancesin00ricarich).pdf
Rabu, 2022-12-28 20:16:27

sunspots and planetary positions   (  ) Author Ricard, Jerome Sixtus, 1850- Title Latest advances in weather forecasting at a long range by sunspots and...

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File:Sunspots NOAA 486 and NOAA 484, October 24th, 2003 (noao-04699).tiff
Sabtu, 2025-05-17 06:39:19

English A close-up view of sunspots NOAA 486 and NOAA 484, October 24th, 2003. Picture by Dr Bill Livingston from the McMath-Pierce solar facility on Kitt...

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File:Atlantis Quartet.jpg
Kamis, 2026-05-07 05:56:30

object of statement has role: photographer author name string: Sunspot Soldier Wikimedia username: Sunspot Soldier determination method or standard: SHA-1...

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File:Faculae and Sunspots at Solar Maximum and Solar Minimum (SVS4892 - SolarMax AIA1700A stand HD1080i p30).webm
Minggu, 2025-08-03 18:28:45

collected near solar maximum (April 2014). Note the small dark regions (sunspots) and the brighter speckled regions (faculae) around them. determination...

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File:The Hang Ups performing live at the Turf Club in St. Paul, MN on May 30, 2013.jpg
Minggu, 2026-05-03 17:10:19

Sunspot Soldier at English Wikipedia, the copyright holder of this work, hereby publishes it under the following licenses: This file is licensed under...

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File:0831Ha. Kuindzhi A.I. Sunspots on Frost, 1876-1890.jpg
Jumat, 2026-05-08 13:40:35

org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse English Sunspots on Frost (artist - A.I. Kuindzhi, 1841–1910): State Russian Museum, Inzhenernaya...

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File:Sun with sunspots.JPG
Rabu, 2023-05-10 16:47:44

Alike 3.0 truetrue You may select the license of your choice. English Sunspots visible in 2003 object of statement has role: photographer author name...

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File:Adaptive Optics at the McMath-Pierce (noao-03320).tiff
Sabtu, 2025-05-17 06:03:03

optics is illustrated by 100 simultaneous short-exposure images of a small sunspot at 1000nm and the corresponding wavefront sensor data. determination method...

Click to read more »
File:SSN Predict NASA.gif
Sabtu, 2024-08-17 18:40:40

press the “ESC” key. The restart the animation press the “F5” key. English Sunspot number predictions for Solar cycle 23 and 24 applies to jurisdiction: United...

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File:Faculae and Sunspots at Solar Maximum and Solar Minimum (SVS4892 - SolarMin AIA1700A stand HD1080i p30).webm
Jumat, 2025-11-14 18:15:21

imagery, collected near solar minimum (April 2019). Even near solar minimum, sunspots can still form. Brighter speckled faculae surround it. determination method...

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File:Ssn yearly.jpg
Selasa, 2025-10-21 00:04:39

400 year sunspot history, measured with Wolfer numbers. 1790 to 1820: Dalton Minimum 1645 to 1715: Maunder Minimum Source: http://science.nasa...

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File:Solar-cycle-data-German.png
Jumat, 2026-04-03 05:48:50

picture depicts the last three solar cycles as measured in solar irradiance, sunspot numbers, solar flare activity, and 10.7 cm radio flux. Solar irradiance...

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File:Faculae and Sunspots at Solar Maximum and Solar Minimum (SVS4892 - SolarMin HMIintensity stand HD1080i p30).webm
Minggu, 2025-08-03 18:29:15

imagery, collected near solar minimum (April 2019). Even near solar minimum, sunspots can still form. Brighter speckled faculae are barely visible around it...

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File:Faculae and Sunspots at Solar Maximum and Solar Minimum (SVS4892 - SolarMax AIA1700A stand UHD2160 p30).webm
Senin, 2026-04-06 23:25:29

collected near solar maximum (April 2014). Note the small dark regions (sunspots) and the brighter speckled regions (faculae) around them. determination...

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File:A645, August 21, 2017 total solar eclipse composite image with corona, prominences, diamond ring and partial eclipse with sunspots.jpg
Sabtu, 2026-05-02 11:57:01

image with corona, prominences, diamond ring and partial eclipse with sunspots Wikimedia username: Brian W. Schaller URL: https://commons.wikimedia...

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File:A.Wilson susnpot observations 3,4,5.png
Rabu, 2025-02-05 05:19:18

org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse English A.Wilson's drawings of sunspots determination method or standard: SHA-1...

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File:Faculae and Sunspots at Solar Maximum and Solar Minimum (SVS4892 - SolarMin AIA1700A stand UHD2160 p30).webm
Minggu, 2025-08-03 18:29:08

imagery, collected near solar minimum (April 2019). Even near solar minimum, sunspots can still form. Brighter speckled faculae surround it. determination method...

Click to read more »
File:Hydrogen-alpha image of a solar flare (noao-04731).jpg
Sabtu, 2025-05-17 06:17:01

English The small sunspot observed close to the limb on October 24th 2003 was part of the big active region that produced the X17.2 flare on October 28th...

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File:Electronics Technician - Volume 7 - Antennas and Wave Propagation - NAVEDTRA 14092.pdf
Selasa, 2025-11-04 16:06:55

known as SUNSPOTS. Sunspots are believed to be caused by violent eruptions on the sun and are characterized by strong magnetic fields. These sunspots cause...

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File:Paike logota.jpg
Kamis, 2025-12-25 04:18:06

this work, hereby publish it under the following license: English Sun and sunspots with image of Earth in top right for comparison determination method or...

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File:Mercury Transit, November 8, 2006 (noao0613b).jpg
Sabtu, 2025-05-17 06:26:27

of the McMath-Pierce Solar Telescope at Kitt Peak National Observatory. Sunspot 923 is visible to the upper right. determination method or standard: SHA-1...

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File:Mercury Transit, November 8, 2006 (noao0613b).tiff
Sabtu, 2025-05-17 06:26:27

of the McMath-Pierce Solar Telescope at Kitt Peak National Observatory. Sunspot 923 is visible to the upper right. determination method or standard: SHA-1...

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File:Sunspot978 mirage.jpg
Jumat, 2020-09-11 01:37:49

wikipedia.org/wiki/Mirage Mirage] of [http://en.wikipedia.org/wiki/Sunspot sunspot] #978 |Source=self-made |Date=12/10/2007 |Author= [https://sites.google...

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File:Hydrogen-alpha image of a solar flare (noao-04731).tiff
Sabtu, 2025-05-17 06:17:01

English The small sunspot observed close to the limb on October 24th 2003 was part of the big active region that produced the X17.2 flare on October 28th...

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File:Faculae and Sunspots at Solar Maximum and Solar Minimum (SVS4892 - SolarMin HMIintensity stand UHD2160 p30).webm
Minggu, 2025-08-03 18:29:18

imagery, collected near solar minimum (April 2019). Even near solar minimum, sunspots can still form. Brighter speckled faculae are barely visible around it...

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File:Sunspot Growth in June 2012.ogv
Sabtu, 2025-12-20 04:29:12

DescriptionSunspot Growth in June 2012.ogv English: Groups of sunspots grow and die over a matter of days. This is a movie built from images taken by...

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File:Sunspots AR2916 - December 26 2021 (51777128541).png
Kamis, 2024-08-15 20:44:25

2.0 Creative Commons Attribution 2.0 truetrue 25 February 2024 English Sunspots AR2916 - December 26 2021 Flickr user ID: 53460575@N03 author name string:...

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File:Solar Orbiter's view of active region AR3664 ESA498774.gif
Minggu, 2025-04-27 18:42:44

that’s facing away from Earth, Solar Orbiter witnessed the hyperactive sunspot cluster AR3664 produce the biggest flare yet of the current solar cycle...

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File:Sun Emits X6 3 Flare on February 22, 2024 (SVS14535 - SDO 02222024 X6 HMI-Continuum 4k).webm
Minggu, 2025-08-03 20:08:04

English NASA’s Solar Dynamics Observatory captured this imagery of the sunspot group responsible for the recent solar flares on Feb. 22, 2024. The footage...

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File:Sunspots AR2916 - December 26 2021 (51776306587).png
Kamis, 2024-08-15 20:44:58

2.0 Creative Commons Attribution 2.0 truetrue 25 February 2024 English Sunspots AR2916 - December 26 2021 Flickr user ID: 53460575@N03 author name string:...

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File:On the Prediction of Solar Cycles.webp
Kamis, 2025-07-31 20:47:19

org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Annual mean sunspot values from January 15, 1749, to March 15, 2020....

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File:Paike logoga.jpg
Jumat, 2026-01-23 05:52:16

this work, hereby publish it under the following license: English Sun and sunspots with image of Earth in top right for comparison Wikimedia username: Nielander...

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File:Solar transit with airplane and sunspots – Prishtina Observatory.jpg
Kamis, 2026-02-12 14:07:19

Sun during a solar observation from Prishtina Observatory, with visible sunspots. Albanian Një aeroplan kalon pranë Diellit gjatë një vëzhgimi diellor nga...

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File:Hathaway2015 Article TheSolarCycle.pdf
Minggu, 2022-11-13 16:01:55

numbers and surface area of sunspots. A number of other solar activity indicators also vary in association with the sunspots including; the 10.7 cm radio...

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File:Solar transit with airplane and sunspots – Prishtina Observatory (cropped).jpg
Senin, 2026-02-09 19:51:25

Sun during a solar observation from Prishtina Observatory, with visible sunspots. Albanian Një aeroplan kalon pranë Diellit gjatë një vëzhgimi diellor nga...

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File:Nachmittagssonne.16.7.2024.P1033295.jpg
Sabtu, 2024-10-26 00:06:28

holder of this work, hereby publish it under the following license: English Sunspots as seen from Berin in the afternoon of 16th July 2024 author name string:...

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File:Solar Cycle 25 prediction and progression.png
Senin, 2025-12-08 00:36:58

ensure that overwrites comply with the guideline. English The number of sunspots in Solar Cycle 25 applies to jurisdiction: United States determination...

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File:NASA, NOAA Announce That the Sun Has Reached the Solar Maximum Period (SVS14683).png
Rabu, 2026-02-11 01:10:24

gov/14683 URL: https://svs.gsfc.nasa.gov/vis/a010000/a014600/a014683/002_Sunspot_ComparisonAUG.png determination method or standard: JImagehash perceptual...

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File:The prediction of solar activity as a basis for the prediction of radio propagation phenomena (IA predictionofsola25inte).pdf
Sabtu, 2024-11-16 12:28:41

variations of solar diameter, corona, prominences, faculae, flocculi, sunspots, light emission, and a large number of dependent terrestrial phenomena...

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File:Halloween Storm of 2003 (10590360816).jpg
Rabu, 2025-04-30 09:19:56

7 February 2025 English On October 28, 2003, the sunspot abruptly ejected a concentrated mass of electrically conducting solar wind, flinging it out into...

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File:2020GL087795.pdf
Rabu, 2023-05-10 20:59:00

Description2020GL087795.pdf English: By obtaining the analytic signal of daily sunspot numbers since 1818 we construct a new solar cycle phase clock that maps...

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File:Nomographic predictions of F2-layer frequencies throughout the solar cycle, for September (IA nomographicpredi20inte).pdf
Minggu, 2024-08-18 12:23:05

Me SUNSPOT NUMBER - 130 120 110 100 90 80 70 60 50 40 30 12 10 20 13- 10 u— 15 —3 Fig. 4 0 60° W ZONE SEPTEMBER 0 SUNSPOT NUMBER...

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File:Solar-cycle-data.png
Senin, 2025-10-20 16:33:16

http://www.pmodwrc.ch/pmod.php?topic=tsi/composite/SolarConstant International sunspot number: http://www.ngdc.noaa.gov/stp/SOLAR/ftpsunspotnumber.html Flare...

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File:The ionosphere as a measure of solar activity (IA ionosphereasmeas26phil).pdf
Sabtu, 2020-09-05 01:26:31

parallel that of many solar and terrestrial phenomena, - the prevalence of sunspots, solar flocculi, auroral displays, variations in geomagnetism. « all of...

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File:Climatic cycles and tree-growth- a study of the annual rings of trees in relation to climate and sol (IA climaticcyclestr131doug).pdf
Kamis, 2025-01-02 17:28:38

v.3. A study of cycles Subjects: Tree-rings; Meteorology; Climatology; Sunspots Language English Publication date 1919 publication_date QS:P577,+1919-00-00T00:00:00Z/9...

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File:F-region irregularities studied by scintillation of signals from satellites (IA jresv68Dn8p881).pdf
Rabu, 2024-08-21 03:06:13

has b een studied for fiv e years during the d ecli ning phase of the sunspot cycle. It is found that the character of the scintillation, and thus, pr...

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File:Methods used by IRPL for the prediction of ionosphere characteristics and maximum usable frequencies (IA methodsusedbyirp04inte).pdf
Rabu, 2024-08-21 03:09:28

regular variation® diurnally, seasonally,, and from year to year with the sunspot cycle. These variation® repeat themselves in a sufficiently regular manner...

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File:Predicted F2-layer frequencies throughout the solar cycle, for summer, winter and equinox season (IA predictedf2layer16inte).pdf
Rabu, 2024-08-28 03:26:35

. Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Basic Prediction Charts, for Sunspot Numbers of 0 and 100s June W Zone ........ o ... o . . o . . I Zone E Zone...

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File:Coronal mass ejection on 20 May 2024 ESA498777.png
Jumat, 2026-01-23 09:42:45

from Earth, the ESA-led Solar Orbiter mission witnessed the hyperactive sunspot cluster AR3664 produce the biggest flare yet of the current solar cycle...

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File:ALMA observes a giant sunspot (1.25 millimetres).jpg
Rabu, 2025-07-23 11:36:05

a giant sunspot (1.25 millimetres).jpg English: This ALMA image of an enormous sunspot was taken at a wavelength of 1.25 millimetres. Sunspots are transient...

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File:Weather and disease - a curve history of their variations in recent years (IA b24401110).pdf
Rabu, 2025-01-08 03:14:13

the Winter — Sunspots and thunderstorms. — Sunspots and the relation of raindays to — Sunspots and Spring rains at Geneva. quarter — Sunspots and the temperature...

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File:Solar-cycle data for correlation with radio propagation phenomena (IA solarcycledatafo23inte).pdf
Minggu, 2024-08-18 06:25:05

individual sunspots and sunspot groups made at various observatories, reduced to a common basis by means of the formula: Relative sunspot number = C(10G*^N)...

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File:Coronal mass ejection on 27 May 2024 ESA498775.gif
Jumat, 2026-01-23 09:42:46

English On 27 May 2024, the hyperactive sunspot region AR3664 announced its return to the Sun's side facing Earth by sending out a class X2.9 flare and...

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File:Toriumi-Wang2019 Article Flare-productiveActiveRegions.pdf
Kamis, 2020-09-10 00:57:44

free magnetic energy and helicity is built, which is represented by δ-sunspots, sheared polarity inversion lines, magnetic flux ropes, etc; the flare...

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File:Variations in refractive index of CO2-free dry air and a statistical correlation with solar activity (IA variationsinrefr13111tilt).pdf
Rabu, 2024-08-21 06:07:39

systematic variations and a correlation between refractivity and annual sunspot number has been found, the Pearson r being —0.48 (±0.08 probable error)...

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File:Climatic Cycles and Tree-Growth - 1919.djvu
Senin, 2025-05-26 17:23:16

Correlation with sunspots Dry-climate tests Wet-climate reaction 74 The European groups 76 Windsor (Vermont) correlation. . The sunspots and their possible...

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File:Sun in H-alpha in monochrome from Prishtina Observatory.jpg
Selasa, 2026-05-19 12:49:44

H-alpha image of the Sun captured with a Coronado SolarMax II, showing sunspots, filaments, and prominences. object of statement has role: photographer...

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File:Nomographic prediction of F2-layer frequencies throughout the solar cycle, for February (IA nomographicpredi32inte).pdf
Jumat, 2026-03-27 11:52:55

decrease in these values with increase of sunspot number® It is estimated that the amount of this error* at a sunspot number of 100* is about 5%o Fig. |...

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File:Weather and disease (electronic resource) - a curve history of their variations in recent years (IA b2146036x).pdf
Selasa, 2020-12-29 22:49:18

Winter — Sunspots and thunderstorms. — Sunspots and the relation of raindays to — Sunspots and Spring rains at Geneva. quarter. — Sunspots and the temperature...

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File:Variations in frequency of occurrence of sporadic E, 1949-1959 (IA variationsinfreq117chad).pdf
Rabu, 2024-08-21 06:07:42

highest average sunspot number for over 200 years. Correlation coefficients for yearly count of fEs > 5 Mc vs. yearly average sunspot number were found...

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File:Basic radio propagation predictions for October 1948- three months in advance (IA basicradiopropag47inte).pdf
Minggu, 2024-08-18 19:52:58

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3-1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-3. Some...

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File:Solar-geophysical data (IA solargeophysical149cent).pdf
Sabtu, 2024-08-17 22:14:00

and Sunspot Regions Coronal Line Emission Indices (a)(b) (c)(d) (e)(f) IV INDICES Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle...

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File:Some methods for general prediction of sudden ionospheric disturbances (IA somemethodsforge13shap).pdf
Kamis, 2025-12-04 10:57:45

be high in the years near the sunspot maximumo The observations of SID on paths terminating at Washington over a sunspot cycle are in accord with this...

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File:A nomographic method for both prediction and observation correlation of ionosphere characteristics (IA nomographicmetho11phil).pdf
Minggu, 2024-08-18 12:07:12

running average of monthly average sunspot numbers. The sunspot numbers used herein are the Zurich relative sunspot numbers, which are disseminated by...

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File:Nomographic predictions of F2-layer frequencies throughout the solar cycle, for January (IA nomographicpredi28inte).pdf
Jumat, 2024-12-06 12:19:08

decrease in these values with increase of sunspot number. It is estimated that the amount of this error, at a sunspot number of 100, is about 5$. 100” ...

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File:Weather and disease- a curve history of their variations in recent years (IA weatherdiseasecu00macdrich).pdf
Rabu, 2022-07-13 12:31:32

demonstrable relations between weather and the sunspot cycle of about eleven years, relations of sunspots to ; obvious influences of solar radiation....

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File:Predicted limits for F2-layer radio transmission throughout the solar cycle (IA predictedlimitsf15inte).pdf
Minggu, 2024-08-25 00:43:20

maximum values during periods of sunspot minimum. Frequencies for fairly reliable sporadic-E trasnmission at sunspot minimum do net, in general, exceed...

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File:Solar-geophysical data (IA solargeophysical155cent).pdf
Minggu, 2024-08-25 13:18:46

Relative Sunspot Numbers and 2000 Me Solar Flux Graph of Sunspot Cycle SOLAR (a) (b) SOLAR CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions...

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File:Solar-geophysical data (IA solargeophysical180cent).pdf
Minggu, 2024-08-18 06:49:18

II Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

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File:An investigation of multivariate adaptive regression splines for modeling and analysis of univariate and semi-multivariate time series systems. (IA investigationofm00stev).pdf
Rabu, 2024-08-21 04:38:43

sunspot numbers and ASTAR Figure 17. Wolf sunspot numbers The (first 40 lags) of the fitted residuals for Model 9 of the yearly Wolf sunspot numbers...

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File:Solar-geophysical data (IA solargeophysical157cent).pdf
Senin, 2025-03-03 06:49:56

Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle SOLAR (a) (b) ni SOLAR CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions...

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File:Solar-geophysical data (IA solargeophysical143cent).pdf
Senin, 2024-10-28 05:17:41

Zurich Daily Numbers Graph of Sunspot Cycle SOLAR (a) (b) SUNSPOT CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions Coronal Line Emission Indices...

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File:Basic radio propagation predictions for March 1949- three months in advance (IA basicradiopropag52inte).pdf
Minggu, 2024-08-18 20:30:26

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3-1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum CRPL-1-3. Some...

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File:Solar-geophysical data (IA solargeophysical140cent).pdf
Senin, 2024-08-26 04:41:31

RELATIVE SUNSPOT NUMBERS (a) (b) American and Zurich Daily Numbers Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions...

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File:Solar-geophysical data (IA solargeophysical170cent).pdf
Minggu, 2024-08-25 04:54:53

(b) Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

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File:Solar-geophysical data (IA solargeophysical156cent).pdf
Selasa, 2025-11-18 01:52:04

of I DAILY (a) (b) IJ ITI INDICES Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle SOLAR (a) (b) SOLAR Tables and Graphs...

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File:Solar-geophysical data (IA solargeophysical167cent).pdf
Minggu, 2024-08-18 07:02:12

(b) Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

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File:White light, October 13th 1989 (noao-5008).tiff
Minggu, 2025-03-16 20:00:50

photosphere of the Sun, taken in white light on October 13th 1989. Two large sunspots appear close together in the center of the disk. determination method or...

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File:Solar-geophysical data (IA solargeophysical147cent).pdf
Minggu, 2024-08-18 12:16:20

SUNSPOT NUMBERS (a) (b) II American and Zurich Daily Numbers Graph of Sunspot Cycle SOLAR CENTERS OF (a) (b) ACTIVITY Calcium Plage and Sunspot Regions...

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File:Heucherella Sunspot 1zz.jpg
Jumat, 2024-10-11 20:00:25

DescriptionHeucherella Sunspot 1zz.jpg English: Location taken: American Plant Food Company, 7405 River Road, Bethesda MD.. Names: Heucherella 'Sunspot'  , Sunspot Coralbells...

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File:Solar-geophysical data (IA solargeophysical177cent).pdf
Minggu, 2024-08-18 05:58:00

II Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

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File:Solar-geophysical data (IA solargeophysical146cent).pdf
Sabtu, 2024-12-28 15:34:45

Zurich Daily Numbers Graph of Sunspot Cycle SOLAR CENTERS OF (a) (b) 111 SUNSPOT - NUMBERS ACTIVITY Calcium Plage and Sunspot Regions Coronal Line Emission...

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File:Prediction of the likelihood of interference at frequencies of 30 to 42 megacycles in Alaska (IA jresv52n1p21).pdf
Jumat, 2026-01-02 16:45:04

-zone, for sunspot numbers 60 , 80, 100] ] 20 , and 140] and the months June and D ecember. It was not n ecessary to prepare charts for sunspot numbers less...

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File:Solar-geophysical data (IA solargeophysical137cent).pdf
Sabtu, 2024-10-12 08:49:11

RELATIVE SUNSPOT NUMBERS (a) (b) American and Zurich Daily Numbers Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions...

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File:Mercury transit on May 7, 2003 (eso0312b).jpg
Rabu, 2026-01-14 19:40:58

one, when the black disc of Mercury (above, left) passed near a group of sunspots on the solar surface. determination method or standard: SHA-1 described...

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File:Solar-geophysical data (IA solargeophysical150cent).pdf
Kamis, 2020-09-10 18:59:50

Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle n SOLAR CENTERS OF (a) (b) HI ACTIVITY Calcium Plage and Sunspot Regions Coronal...

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File:Solar-geophysical data (IA solargeophysical154cent).pdf
Minggu, 2024-08-18 06:58:37

Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle SOLAR (a) (b) til SOLAR CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions...

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File:Solar Cycle 6.png
Kamis, 2025-06-26 15:57:39

The graph of solar cycle 6. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:Solar-geophysical data (IA solargeophysical161cent).pdf
Kamis, 2020-09-10 19:03:54

II Relative Sunspot Numbers and 2G00 Me Solar Flux Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

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File:Solar-geophysical Data (IA solargeophysical135cent).pdf
Selasa, 2026-04-14 07:42:31

of Sunspot Cycle II SOLAR (a) (b) III CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions Coronal Line Emission Indices SOLAR (a) (b) SUNSPOT NUMBERS...

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File:Solar-geophysical data (IA solargeophysical2431cent).pdf
Minggu, 2024-08-18 12:53:02

INDICES Relative Sunspot Numbers Solar Flux Values, 2800 Mc/s Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions Mt. Wilson...

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File:Sunspot diagram.svg
Senin, 2025-10-20 16:17:09

DescriptionSunspot diagram.svg Беларуская: Дыяграма структуры магнітных ліній сонечных успышак і іх паходжанне праз дэфармацыю ліній магнітнага поля на...

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File:Descriptive text and index for solar-geophysical data (IA descriptivetexti1963cent).pdf
Kamis, 2026-04-23 05:19:26

INDICES Relative Sunspot Numbers Solar Flux Values, 2800 Mc/s Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions Mt. Wilson...

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File:Solar-geophysical data (IA solargeophysical145cent).pdf
Minggu, 2024-08-18 07:12:26

Zurich Daily Numbers Graph of Sunspot Cycle SOLAR (a) (b) SUNSPOT CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions Coronal Line Emission Indices...

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File:Measurements of the total electron content and the equivalent slab thickness of the midlatitude ionosphere (IA jresv69Dn7p929).pdf
Senin, 2026-04-20 12:19:25

near Washington, D.C., and Ottawa. The trends of diurnal, seasonal, and sunspot cycle variations of NT and T at midday are describer!. It is found that...

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File:Solar-geophysical data (IA solargeophysical183cent).pdf
Minggu, 2024-08-25 18:35:16

Relative Sunspot Numbers and 2000 Me Solar Flux Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) (c) Calcium Plage and Sunspot Regions Coronal...

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File:A study of PC-based HF Ionospheric Propagation predictions for use in Naval communications (IA astudyofpcbasedh1094527747).pdf
Minggu, 2024-08-18 02:10:35

sunspot number. There is a seasonal variation of the monthly median fF2. The largest variation over the ,car occurs during periods of" high sunspot activity...

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File:Smithsonian miscellaneous collections (IA smithsonianmisce1011942smit).pdf
Sabtu, 2024-05-18 03:43:56

is approximately two sunspot 11+ years. I mentioned also that the sunspot numbers themselves indicate a master cycle of two sunspot periods. I now give...

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File:Partial Solar Eclipse Seen From Wyoming in 2017 (ann24010a).jpg
Sabtu, 2025-05-17 06:30:31

partial solar eclipse as seen from Guernsey, Wyoming on 21 August 2017. Sunspots are visible on the left side of the Sun’s surface. determination method...

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File:Descriptive text and index for solar-geophysical data (IA descriptivetexti2321cent).pdf
Kamis, 2026-04-23 05:19:27

I DAILY SOLAR INDICES Relative Sunspot Numbers -- The table includes (1) the daily American relative sunspot numbers, R^1 as compiled by Sarah J...

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File:Sunspot Numbers.svg
Sabtu, 2026-01-03 20:20:41

DescriptionSunspot Numbers.svg English: Numbers of sunspots since 1610. Several periodic cycles are evident, most notably the 11 year (131 ± 14 month)...

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File:187-PTRSA-216.pdf
Senin, 2024-05-20 00:19:43

...................................... 234 Fourier coefficients . 240 Sunspot relations. W olf ’s fo r m u la .........................................

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File:A history of vertical-incidence ionsphere sounding at the National Bureau of Standards. (IA historyofvertica28glad).pdf
Minggu, 2024-08-18 15:38:35

ionosonde developed in 1933? and covering half of a sunspot cycle. Since it appeared that a high value of sunspot number usually corresponded to a high value...

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File:Solar-geophysical data (IA solargeophysical152cent).pdf
Senin, 2025-12-15 22:55:09

Plage and Sunspot Regions Coronal Line Emission Indices SOLAR (a! (b) INDICES Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle ...

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File:Sunspot numbers pl.svg
Sabtu, 2026-01-03 19:52:40

DescriptionSunspot numbers pl.svg Polski: Liczba plam obserwowanych na Słońcu od 1610 roku. Widoczne są pewne okresowości, głównie cykl 11-letni (okres...

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File:Solar-geophysical data (IA solargeophysical186cent).pdf
Minggu, 2024-08-25 00:44:39

(b) Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

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File:Solar-geophysical data (IA solargeophysical174cent).pdf
Kamis, 2020-09-10 19:09:01

II Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

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File:Studies in terrestrial magnetism (IA studiesinterrest00chrerich).pdf
Sabtu, 2026-04-18 11:46:33

XIV SUNSPOTS AND TERRESTRIAL MAGNETISM ....... .1 60 CHAPTER XV WOLF'S SUNSPOT FORMULA . . . ... ... 168 CHAPTER XVI NATURE OF SUNSPOT RELATIONSHIP...

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File:Solar-geophysical data (IA solargeophysical153cent).pdf
Minggu, 2024-08-18 14:04:55

Relative Sunspot. Numbers and 2000 Me Solar Flux Graph of Sunspot (Tele SOLAR (a) (b) SOLAR CENTERS Of ACTIVITY Calcium Plage and Sunspot Regions...

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File:The Pier.jpg
Sabtu, 2025-10-04 11:16:19

Commons Attribution-Share Alike 4.0 truetrue English abandoned beach pier at Sunspot Villa author name string: CaptJayRuffins Wikimedia username: CaptJayRuffins...

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File:Spots on the Sun vs spots on extreme horizontal branch stars (artist's impression) (eso2009b).tiff
Selasa, 2025-07-22 11:44:30

horizontal branch stars (right) appear to be quite different from the dark sunspots on our own Sun (left), but both are caused by magnetic fields. determination...

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File:2024 solar eclipse (2024-TLS-IMG 0291-CC).tiff
Sabtu, 2025-05-17 06:02:04

the 2024 solar eclipse shows the moon partially covering the sun. Two sunspots are visible. determination method or standard: SHA-1 described at URL:...

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File:Solar Cycle 2.png
Kamis, 2025-06-26 15:57:33

The graph of solar cycle 2. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:Solar Cycle 19.png
Kamis, 2025-06-26 16:57:23

The graph of solar cycle 19. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:Solar Cycle 17.png
Kamis, 2025-06-26 16:57:20

The graph of solar cycle 17. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:Solar-geophysical Data (IA solargeophysical136cent).pdf
Jumat, 2025-12-26 13:38:25

Sunspot Cycle II SOLAR (a) (b) III (b) CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions Coronal Line Emission Indices SOLAR (a) SUNSPOT NUMBERS...

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File:Solar-geophysical data (IA solargeophysical164cent).pdf
Minggu, 2024-08-25 15:59:05

(b) Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

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File:Heucherella Sunspot 2zz.jpg
Selasa, 2020-09-15 16:34:36

DescriptionHeucherella Sunspot 2zz.jpg English: Location taken: Merrifield Garden Center, Fairfax VA USA. Names: Heucherella 'Sunspot'  , Sunspot Coralbells, Sunspot Foamy...

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File:A Guide to the Mission and Purpose of NASA's Solar Dynamics Observatory.pdf
Senin, 2025-04-21 05:37:07

Smoothed Monthly Values Monthly Values Predicted Values (Smoothed) 150 125 Sunspot Number The 11-year solar cycle is largely unpredictable. It’s not even...

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File:Sunspot-2004.jpeg
Jumat, 2025-02-28 01:15:53

DescriptionSunspot-2004.jpeg A large sunspot group in 2004 photographed at the 2. ATB. You can also see the granulation of the sun surface. The picture...

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File:Ionospheric Data (IA ionosphericdata17cent).pdf
Minggu, 2024-08-18 07:00:59

4 World-wide variation of yearly average f°F2, — sunspot sunspot sunspot sunspot sunspot sunspot number number number number number number * 0, -...

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File:Solar-geophysical data (IA solargeophysical235cent).pdf
Selasa, 2025-12-16 17:33:03

(b) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - January - February 1964 Graph of Sunspot Cycle (c) Zurich Final Relative Sunspot Numbers SOLAR...

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File:Ssn anual.jpg
Selasa, 2025-10-21 00:04:37

Nombre de Wolf de Taques solars 400 anys. 400 year sunspot history, measured with Wolfer numbers. 1790 to 1820: Dalton Minimum 1645 to 1715: Maunder Minimum...

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File:Solar-geophysical data (IA solargeophysical144cent).pdf
Rabu, 2026-02-18 04:17:13

(b) SUNSPOT NUMBERS American and Zurich Daily Numbers Graph of Sunspot Cycle II SOLAR CENTERS OF (a) (b) III ACTIVITY Calcium Plage and Sunspot Regions...

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File:Technical considerations leading to an optimum allocation of radio frequencies in the band 25 to 60 Mc. (IA technicalconside13nort).pdf
Rabu, 2024-10-23 20:28:02

corresponds to a wxnter month at sunspot number 130 (although 25 percent of the maxima of past sunspot cycles exceeded 130, this sunspot number was exceeded for...

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File:Solar-geophysical data (IA solargeophysical139cent).pdf
Selasa, 2024-08-20 23:50:46

(a) (b) SUNSPOT NUMBERS American and Zurich Daily Numbers Graph of Sunspot Cycle II SOLAR CENTERS OF (a) (b) III Calcium Plage and Sunspot Regions...

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File:Solar-geophysical data (IA solargeophysical151cent).pdf
Minggu, 2024-08-18 12:10:35

and Sunspot Regions Coronal Line Emission Indices SOLAR (a)(b) (c) (d) TV INDICES Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle...

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File:Solar-geophysical data (IA solargeophysical159cent).pdf
Minggu, 2026-02-15 15:35:01

Relative Sunspot Numbers and 2800 Me Solar Flux Graph Sunspot Cycle SOLAR (a) (b) SOLAR CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions Coronal...

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File:Solar-geophysical data (IA solargeophysical141cent).pdf
Kamis, 2020-09-10 18:56:46

RELATIVE SUNSPOT NUMBERS Ca) (b) American and Zurich Daily Numbers Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY Ca) (b) Calcium Plage and Sunspot Regions...

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File:Solar-geophysical data (IA solargeophysical158cent).pdf
Minggu, 2025-11-09 16:04:39

Relative Sunspot Numbers and 2800 Me Solar Flux Graph cf Sunspot Cycle n SOLAR CENTERS OF (a) (b) EQ ACTIVITY Calcium Plage and Sunspot Regions Coronal...

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File:Measurements of ultraviolet solar radiation in Washington, 1936 to 1942 (IA jresv30n6p435).pdf
Rabu, 2024-08-21 14:01:36

(movements of masses of polar air) and, less systematically, with the sunspot cycle [5, 6, 18]. II. APPARATUS AND METHODS In previous publications,...

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File:Sunspot (10477602195).jpg
Minggu, 2026-01-11 09:41:48

DescriptionSunspot (10477602195).jpg sunspot Date 25 October 2013, 17:10 Source sunspot Author sebastien lebrigand from crépy en valois, FRANCE...

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File:Ionospheric predictions for February 1964 (IA ionosphericpredi11cent).pdf
Selasa, 2024-08-27 02:50:54

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Solar-geophysical data (IA solargeophysical142cent).pdf
Minggu, 2024-08-18 07:05:26

Zurich Daily Numbers Graph of Sunspot Cycle SOLAR (a) (b) SUNSPOT CENTERS OF ACTIVITY Calcium Plage and Sunspot Regions Coronal Line Emission Indices...

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File:A survey of spread-F (IA surveyofspreadf82glov).pdf
Minggu, 2024-08-18 07:05:22

Baguio- (5°N geomagnetic) at times of sunspot minimum and sunspot maximum, illustrates the relation of the sunspot cycle to the diurnal pattern of spread-F...

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File:9January2008.pdf
Jumat, 2026-05-01 17:31:43

January 4. This sunspot is a precursor for the normal increase in activity which takes place during the 11-year solar cycle. "This sunspot is like the first...

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File:Basic radio propagation predictions for July 1948- three months in advance (IA basicradiopropag44inte).pdf
Sabtu, 2024-08-17 05:50:35

Prediction of Annual Sunspot Numbers. GRPL-1-2, 3—1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-3. Some...

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File:Characteristics of the ionosphere and their application to radio transmission (IA jresv18n6p645).pdf
Minggu, 2024-08-18 21:11:25

increase of critical frequencies which is associated with the ll-year sunspot cycle. Data are given only for those layers which are fairly regular in...

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File:Sunspot Active Region 3092 - September 6 2022 - Flickr - Kevin M. Gill.jpg
Selasa, 2024-06-25 18:02:21

DescriptionSunspot Active Region 3092 - September 6 2022 - Flickr - Kevin M. Gill.jpg Sunspot Active Region 3092 - September 6 2022 Date Taken on 6 September...

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File:Solar-geophysical data (IA solargeophysical189cent).pdf
Minggu, 2025-03-09 12:23:56

Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) (c-e) Calcium Plage and Sunspot Regions Coronal...

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File:The Sun - May 4 2018 (40090379930).jpg
Rabu, 2026-01-14 17:58:02

different exposure and processing. Taken a couple hours later (notice the Sunspot starting to form). Flickr user ID: 53460575@N03 author name string: Kevin...

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File:Ionospheric Data (IA ionosphericdata22cent).pdf
Sabtu, 2020-09-05 02:31:28

Ionospheric “Sunspot Number1* as Determined by Yearly-*Average Trend and Average Monthly Index of foFs? . . . Pig. 77 Variation of Ionospheric “Sunspot Number58...

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File:Solar Cycle 4.png
Kamis, 2025-06-26 15:57:36

The graph of solar cycle 4. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:Sunspot Number-it.png
Selasa, 2025-10-21 00:04:44

DescriptionSunspot Number-it.png Italiano: traduzione di File:Sunspot_Numbers.png Date 7-10-2008 Source Wikimedia commons Author HeNRyKus...

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File:Solar-geophysical data (IA solargeophysical148cent).pdf
Kamis, 2020-09-10 18:59:11

Plage and Sunspot Regions Coronal Line Emission Indices SOLAR V INDICES Relative Sunspot Numbers and 2000 Me Solar Flux Graph of Sunspot Cycle SOLAR...

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File:Solar Cycle 5.png
Kamis, 2025-06-26 15:57:38

The graph of solar cycle 5. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:Sunspot-bfly.gif
Kamis, 2026-04-16 04:26:52

DescriptionSunspot-bfly.gif English: Daily sunspot area averaged over individual solar rotations. This is colloquially known as the "Butterfly Diagram"...

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File:Journal of the Elisha Mitchell Scientific Society (IA journalofelisham00elis).pdf
Kamis, 2025-12-11 19:13:08

Meeting Constitution and List of ? By-Laws IT Mem hers Approaching Sunspot The Box 19 Maximum — ./. F. Lanneau Tortoises of Southeastern North...

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File:Basic radio propagation predictions for June 1949- three months in advance (IA basicradiopropag55inte).pdf
Minggu, 2024-08-18 15:32:41

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3-1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-2, 3-1...

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File:Basic radio propagation predictions for December 1948- three months in advance (IA basicradiopropag49inte).pdf
Minggu, 2024-08-18 15:32:39

Prediction of Annual Sunspot Numbers. CRPL—1-2, 3—1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-3. Some...

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File:Are there statistical links between the direction of European weather systems and ENSO, the solar cycle or stratospheric aerosols?.pdf
Senin, 2025-04-21 08:12:22

activity is represented here by the Wolf Sunspot number, also known as the International or Zürich Sunspot number, developed by Rudolf Wolf in the nineteenth...

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File:Sunspot-number2021.png
Kamis, 2025-10-30 06:52:01

DescriptionSunspot-number2021.png English: Wolf numbers, data from https://www.sidc.be/silso/DATA/SN_m_tot_V2.0.txt Date 12 February 2021 Source Own work...

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File:Sun in H-alpha – Solar Activity from Prishtina Observatory.jpg
Senin, 2026-02-09 19:52:36

H-alpha image of the Sun captured with a Coronado SolarMax II, showing sunspots, filaments, and prominences. Albanian Imazh H-alfa i Diellit, i kapur me...

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File:Hempel 2024-08-24 08-14-10MESZ Sonne.jpg
Rabu, 2024-09-18 15:51:22

https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Sunspots on 2024-08-24 8h14 MEZ taken from Germany...

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File:Descriptive text and index for CRPL-F part B solar-geophysical data (IA desriptivetextin1960cent).pdf
Minggu, 2025-05-11 17:41:11

I DAILY SOLAR INDICES Relative Sunspot Numbers — The table includes (1) the daily Amer¬ ican relative sunspot numbers, RA* as compiled by Sarah J...

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File:A comparison of trans-equatorial ionosphere propagation predictions from AMBCOM with measured data (IA comparisonoftran00mcki).pdf
Minggu, 2024-08-18 19:44:38

Geomagnetic Coordinate System 4 b. Geomagnetic Activity Indices 5 c. Sunspot Number 5 2. Ionospheric Layers 6 3. Sporadic E (E s ) 9 4. Trans-equatorial...

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File:Solar Cycle 1.png
Kamis, 2025-06-26 15:45:25

The graph of solar cycle 1. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:Solar-geophysical data (IA solargeophysical138cent).pdf
Minggu, 2024-08-18 13:00:14

RELATIVE SUNSPOT NUMBERS (a) (b) American and Zurich Daily Numbers Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions...

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File:Supplement to report CRPL-1-2, 3-1 (IA supplementtorepo1231cent).pdf
Minggu, 2024-08-25 22:57:07

(REVISED) FIELD INTENSITY, pv/m, I KW, 7 Me SUBSOLAR DISTANCE, 0 km (0°) SUNSPOT MINIMUM * Q SUBSOLAR POINT POINT OF MINIMUM FIELD INTENSITY Field Intensity...

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File:Heucherella Sunspot 0zz.jpg
Minggu, 2024-07-07 22:35:30

DescriptionHeucherella Sunspot 0zz.jpg English: Location taken: American Plant Food Company, 7405 River Road, Bethesda MD.. Names: Heucherella 'Sunspot'  , Sunspot Coralbells...

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File:Smithsonian miscellaneous collections (IA smithsonianmisc15261967s).pdf
Selasa, 2025-09-23 05:28:15

beginning of each "Wolf sunspot cycle" of about 11^ years length. So the "Hale cycle" of polarity in sunspots is 2 Wolf cycles, in sunspots. or about 273 months...

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File:Absorption of radio waves reflected at vertical incidence as a function of the sun's zenith angle (IA jresv41n6p575).pdf
Senin, 2024-08-19 00:54:06

two fTequencies, and the mean sunspot number for the sam e period. Although th e exact rate of change of A o with sunspot number slope is the power of...

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File:The light of the world, (IA lightofworld00writ).pdf
Rabu, 2025-07-02 12:11:48

number of sunspots. When there are a great many sunspots, the Corona is round. At other times it is longer and narrower. But the number of sunspots has an¬...

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File:Ionospheric predictions for October 1964 (IA ionosphericpredi19cent).pdf
Jumat, 2025-05-23 22:15:18

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Solar-geophysical data (IA solargeophysical160cent).pdf
Minggu, 2024-08-18 14:53:17

II Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

Click to read more »
File:Ionospheric predictions for April 1965 (IA ionosphericpredi25cent).pdf
Senin, 2021-05-31 12:34:29

Zurich sunspot numbers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Sunspot 3131 (52453461066).jpg
Minggu, 2026-03-15 20:45:12

DescriptionSunspot 3131 (52453461066).jpg IMG_0219 Date 25 October 2022, 11:59 Source sunspot 3131 Author Steve Elliott from UK...

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File:Sunspot-temperature-10000yr.svg
Selasa, 2025-10-21 00:04:49

DescriptionSunspot-temperature-10000yr.svg English: Reconstructed sunspot activity and reconstructed temperature over the last 10000 years. This figure...

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File:Solar Cycle 22.png
Kamis, 2025-06-26 16:57:28

The graph of solar cycle 22. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Solar Cycle 23.png
Kamis, 2025-06-26 16:57:29

The graph of solar cycle 23. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Basic radio propagation predictions for February 1949- three months in advance (IA basicradiopropag51inte).pdf
Jumat, 2024-08-16 02:53:59

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3-1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-3. Some...

Click to read more »
File:Solar Cycle 14.png
Kamis, 2025-06-26 15:57:30

The graph of solar cycle 14. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Basic radio propagation predictions for September 1948- three months in advance (IA basicradiopropag46inte).pdf
Minggu, 2024-08-18 21:07:36

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3-1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-3. Some...

Click to read more »
File:Ionospheric Data (IA ionosphericdata32cent).pdf
Selasa, 2024-08-27 02:50:51

at Washington, D.C. 7 Ionosphere Disturbances . 7 American Relative Sunspot Numbers . ...... 8 Solar Coronal Intensities Observed at Climax, Colorado...

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File:Solar Cycle 18.png
Kamis, 2025-06-26 16:57:22

The graph of solar cycle 18. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Solar Cycle 21.png
Kamis, 2025-06-26 16:57:26

The graph of solar cycle 21. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Basic radio propagation predictions for April 1949- three months in advance (IA basicradiopropag53inte).pdf
Minggu, 2024-08-18 22:05:17

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3-1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-2, 3-1...

Click to read more »
File:Basic radio propagation predictions for August 1948- three months in advance (IA basicradiopropag45inte).pdf
Minggu, 2024-08-18 17:54:28

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3-1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-3. Some...

Click to read more »
File:Solar Cycle 13.png
Kamis, 2025-06-26 16:56:33

The graph of solar cycle 13. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:Sunspot area variation.svg
Selasa, 2025-10-21 00:04:45

DescriptionSunspot area variation.svg Català: Variació de la mitjana mensual de l'àrea total de taques solars, inclosa la seva penombra en relació a l'àrea...

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File:Wikijunior-Solar System.pdf
Sabtu, 2026-02-28 07:10:33

electric arc. The number of sunspots seen rises and falls over an 11 year cycle. The dark areas are called sunspots. Sunspots appear when the Sun's magnetic...

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File:Solar Cycle 8.png
Jumat, 2026-05-22 21:04:27

The graph of solar cycle 8. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Solar Cycle 3.png
Kamis, 2025-06-26 15:57:35

The graph of solar cycle 3. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Ionospheric predictions for September 1964 (IA ionosphericpredi18cent).pdf
Minggu, 2024-08-18 13:27:28

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Seasonal variation of ozone at Washington, D. C. (IA jresv43n3p209).pdf
Minggu, 2024-08-18 00:46:52

total ozone value and surface pressure pattern or between ozone value and sunspot number. A close correlation does, however, exi t between total ozone and...

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File:Cover of Postcards from the Edge of the Universe (iau1008a).jpg
Senin, 2025-01-27 04:04:30

English From sunspots to black holes, planets around other stars, supernovae and dark matter, <em>Postcards from the Edge of the Universe</em> is a book...

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File:Equatorial spread F (IA equatorialspread145calv).pdf
Minggu, 2025-09-28 16:23:22

throughout the night, with magnitudes of 100-200 m/s at sunspot maximum and 50-130 m/s at sunspot minimum. The instability of the F layer giving rise...

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File:NASA, NOAA Announce That the Sun Has Reached the Solar Maximum Period (SVS14683 - 003 solar-cycle-all).jpg
Minggu, 2025-08-03 19:38:09

English 3. Still ImageSunspot number over the previous twenty-four solar cycles. determination method or standard: work of the federal government of the...

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File:White light, October 13th 1989 (noao-5008).jpg
Sabtu, 2025-05-17 06:45:23

photosphere of the Sun, taken in white light on October 13th 1989. Two large sunspots appear close together in the center of the disk. determination method or...

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File:The Old farmer's almanac (IA oldfarmersalmana0000unse p9h4).pdf
Jumat, 2023-12-15 13:11:43

SUNSPOTS DO NOT AFFECT "OUR” WEATHER by Prof. Dr. M. Waldmeier, Director Observatoire Astron. Federal, Zurich, Switzerland Early records of sunspot observations...

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File:The cover of Science in School issue 35 (ann16012a).tiff
Minggu, 2025-07-27 11:39:35

of this issue include: Sports in a spin; Analysing art in the Louvre; Sunspots on a rotating Sun; and “Eggsperiments” for Easter. determination method...

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File:Solar Cycle 7.png
Sabtu, 2025-10-18 00:20:40

The graph of solar cycle 7. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:U S National Science Foundation Daniel K Inouye Solar Telescope Begins Science Operations Commissioning Phase (NSO-DKIST-spot450 full1-CC).tiff
Sabtu, 2025-05-17 06:42:41

English A high-resolution image of solar sunspots captured by the Inouye Solar Telescope on 11 May 2021 (not from the first science observation). determination...

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File:Basic radio propagation predictions for May 1949- three months in advance (IA basicradiopropag54inte).pdf
Minggu, 2024-08-18 02:59:23

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3-1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-2, 3—1...

Click to read more »
File:The utility of HF propagation models for predicting the operating frequency of a non-cooperative transmitter (IA utilityofhfpropa00scho).pdf
Sabtu, 2024-09-21 16:31:56

incoming solar radiation correlated with sunspot activity. Therefore, an accurate knowledge of the sunspot is highly number should generally be sufficient...

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File:U S National Science Foundation Daniel K Inouye Solar Telescope Begins Science Operations Commissioning Phase (NSO-DKIST-spot450 full1-CC).jpg
Sabtu, 2025-05-17 06:42:41

English A high-resolution image of solar sunspots captured by the Inouye Solar Telescope on 11 May 2021 (not from the first science observation). determination...

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File:Solar Cycle 9.png
Kamis, 2025-06-26 15:57:43

The graph of solar cycle 9. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Solar Cycle 12.png
Kamis, 2025-06-26 15:57:27

The graph of solar cycle 12. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Solar Cycle 24.png
Kamis, 2026-03-26 01:27:25

The graph of solar cycle 24. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Basic radio propagation predictions for November 1948- three months in advance (IA basicradiopropag48inte).pdf
Minggu, 2024-08-18 12:27:56

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3—1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-3. Some...

Click to read more »
File:Mercury transit on May 7, 2003 (eso0312b).tiff
Rabu, 2026-01-14 19:40:59

one, when the black disc of Mercury (above, left) passed near a group of sunspots on the solar surface. determination method or standard: SHA-1 described...

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File:2024 solar eclipse (2024-TLS-IMG 0291-CC).jpg
Sabtu, 2025-05-17 06:02:04

the 2024 solar eclipse shows the moon partially covering the sun. Two sunspots are visible. determination method or standard: SHA-1 described at URL:...

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File:Sunspot by stratoscope.jpg
Sabtu, 2024-08-17 22:03:36

DescriptionSunspot by stratoscope.jpg Sunspot photography made by Stratoscope I Date 17 August 1959 Source NASA Author This file is lacking author information...

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File:Ionospheric predictions for November 1965 (IA ionosphericpredi32cent).pdf
Sabtu, 2026-01-24 03:37:04

Printing Office, Washington D.C., 20402, price 40 cents. The predicted sunspot number used for this month is shown in table A, which also lists previous...

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File:X Heucherella Sunspot 0zz.jpg
Sabtu, 2026-02-07 04:05:24

Heucherella Sunspot 0zz.jpg English: Location taken: American Plant Food Company, 7405 River Road, Bethesda MD.. Names: X Heucherella 'Sunspot'   Classification:...

Click to read more »
File:Cover of Postcards from the Edge of the Universe (iau1008a).tiff
Senin, 2025-01-27 04:04:30

English From sunspots to black holes, planets around other stars, supernovae and dark matter, <em>Postcards from the Edge of the Universe</em> is a book...

Click to read more »
File:The PoET main telescope (eso2605a).tiff
Jumat, 2026-04-10 14:18:24

highly detailed spectra of both the entire Sun and specific regions such as sunspots. determination method or standard: SHA-1 described at URL: https://www...

Click to read more »
File:A comparison of high-latitude ionosphere propagation predicitions from AMBCOM with measured data (IA acomparisonofhig1094543734).pdf
Minggu, 2024-08-18 04:06:31

long-range propagation during periods of low sunspot activity, particularly during the low end of the eleven year sunspot cycle. 7 NOPT. GCOM&GN"OC LATIhTUDE...

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File:Ionospheric predictions for January 1966 (IA ionosphericpredi34cent).pdf
Senin, 2024-08-26 03:36:28

Printing Office, Washington D.C., 20402, price 40 cents. The predicted sunspot number used for this month is shown in table A, which also lists previous...

Click to read more »
File:Aerodynamic phenomena in stellar atmospheres, a bibliography (IA aerodynamicpheno30thom).pdf
Selasa, 2025-06-17 22:39:35

capable of explaining the main characteristics of the sunspot cycles of 11 and 22 years and of the Sunspots themselves. 8 Dimensions of the Solar Granules;...

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File:Solar-geophysical data (IA solargeophysical223cent).pdf
Kamis, 2020-09-10 19:27:03

(b) Relative Sunspot Numbers and 2800 Me Solar Flux - January - February Graph of Sunspot Cycle (c) (d) Zurich Final Relative Sunspot Numbers Ottawa...

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File:Solar Cycle 20.png
Kamis, 2025-06-26 16:57:24

The graph of solar cycle 20. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Solar Cycle 16.png
Kamis, 2025-06-26 16:57:19

The graph of solar cycle 16. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Solar Cycle 15.png
Kamis, 2025-06-26 19:56:35

The graph of solar cycle 15. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:The PoET main telescope (eso2605a).jpg
Jumat, 2026-04-10 14:18:28

highly detailed spectra of both the entire Sun and specific regions such as sunspots. determination method or standard: SHA-1 described at URL: https://www...

Click to read more »
File:Comparison of percentage of total time of occurrence of second-multiple Es reflections and that of fEs in excess of 3 Mc (IA comparisonofperc35inte).pdf
Minggu, 2024-08-18 04:11:16

of solar activity, sporauic-E ionization is a maximum during periods of sunspot minimum, and vice versa, according to this theoryo Values of fEs at Watheroo...

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File:Sunspot swedish label1.jpg
Sabtu, 2024-08-17 21:38:01

DescriptionSunspot swedish label1.jpg English: This stunning image shows remarkable and mysterious details near the dark central region of a planet-sized...

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File:Flipped Sunspot Trace.PNG
Sabtu, 2024-08-17 19:02:22

DescriptionFlipped Sunspot Trace.PNG English:  : Original NASA description: It was a quiet day on the Sun in September of 2000. The above image from NASA's...

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File:Predictions of normal radio critical frequencies related to solar eclipses in 1940 (IA jresv24n2p225).pdf
Minggu, 2024-08-18 14:52:22

basis of an extrapolation of the present sunspot cycle by C. N. Anderson [4] . The correlation between the sunspot cycle and the trends of critical frequencies...

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File:Ionospheric Data (IA ionosphericdata36cent).pdf
Sabtu, 2020-09-05 02:48:27

Provisional Relative Sunspot Numbers . 6 Solar Coronal Intensities Observed at Climax, Colorado . 9 Corrections to Sunspot Numbers Appearing in IHPL-E23...

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File:Ionospheric predictions for April 1964 (IA ionosphericpredi13cent).pdf
Jumat, 2025-12-12 10:57:45

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Solar Cycle 11.png
Rabu, 2026-05-27 12:41:21

The graph of solar cycle 11. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

Click to read more »
File:Solar Cycle 10.png
Kamis, 2025-06-26 15:57:25

The graph of solar cycle 10. It is based on the version 2.0 monthly mean sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels (sidc.oma...

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File:Smithsonian miscellaneous collections (IA smithsonianmisce1221955smit).pdf
Sabtu, 2024-05-18 03:44:52

normals as follows, suited to high and low sunspot activity. I chose as the dividing line a Wolf sunspot number of 20. The tem- peratures which follow...

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File:Some studies of atmospheric transmittance on mauna loa (IA jresv61n5p419).pdf
Jumat, 2025-10-03 06:25:45

instrumental setup (sec fig. 2) was essentially the same as employed at Sunspot, N. Mex., in 1955 [31. New PbS cells (and associated housings and electronics)...

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File:Solar-geophysical data (IA solargeophysical238cent).pdf
Rabu, 2025-04-30 21:30:35

DAILY SOLAR INDICES (a) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - April - May 1964 (b) Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Sunspot 3126 (52453980228).jpg
Senin, 2025-01-06 08:40:24

DescriptionSunspot 3126 (52453980228).jpg IMG_0219-sunspot-3126 Date 25 October 2022, 11:59 Source sunspot 3126 Author Steve Elliott from UK...

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File:Euonymus fortunei 'Sunspot' kz01.jpg
Minggu, 2025-04-06 08:06:23

DescriptionEuonymus fortunei 'Sunspot' kz01.jpg English: Euonymus fortunei 'Sunspot' in arboretum in Wojsławice Date 7 May 2016, 13:49:27 Source Own work...

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File:Sunspot 3130 (52453912135).jpg
Minggu, 2026-03-15 20:39:47

DescriptionSunspot 3130 (52453912135).jpg IMG_0219- Date 25 October 2022, 11:59 Source sunspot 3130 Author Steve Elliott from UK...

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File:Ionospheric Data (IA ionosphericdata24cent).pdf
Jumat, 2026-05-15 04:41:18

SUNSPOT NUMBERS ................ Page 11 Daily Median Values of American Relative Sunspot Numbers, July 1946 ...................... Table SUNSPOT GROUP...

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File:Transmission loss in radio propagation - II. (IA transmissionloss12nort).pdf
Senin, 2025-12-08 20:41:21

a period near sunspot maximum as may be seen on Fig. 14 which shows the smoothed Zurich sunspot numbers from 1750 to 1957. The sunspot numbers shown on...

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File:Ionospheric predictions for May 1965 (IA ionosphericpredi26cent).pdf
Senin, 2021-05-31 12:34:29

Zurich sunspot numbers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Ionospheric Data (IA ionosphericdata37cent).pdf
Rabu, 2024-12-25 22:56:22

Ionosphere Disturbances . . . 7 ii American and Zurich Provisional Relative Sunspot Numbers • . . 8 Solar Coronal Intensities Observed at Climax, Colorado...

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File:Comparative analysis of selected radiation effects in Medium Earth Orbits (IA comparativeanaly00boli).pdf
Minggu, 2024-08-18 12:57:53

nm) After . its in intensity of the occur flares neighborhood of sunspots, very seldom emit white hydrogen alpha of energetic light, the in...

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File:Nonlinear modeling of time series using Multivariate Adaptive Regression Splines (MARS) (IA nonlinearmodelin00lewi).pdf
Sabtu, 2024-10-12 22:29:41

any model of a time series with periodic behavior. Analysis of the Wolf sunspot numbers with MARS appears to give an improvement over existing nonlinear...

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File:Ionospheric predictions for August 1964 (IA ionosphericpredi17cent).pdf
Senin, 2026-03-02 15:24:02

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Solar-geophysical data (IA solargeophysical242cent).pdf
Minggu, 2024-08-18 06:54:14

SOLAR INDICES (a) (b) II Relative Sunspot Numbers and 2800 Mc/s Solar Flux - August - September 1964 Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY...

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File:Solar-geophysical data (IA solargeophysical245cent).pdf
Sabtu, 2024-10-05 07:51:56

INDICES (a) (b) (c) (d) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - November-December 1964 Graph of Sunspot Cycle 2800 Mc/s Daily Values of Solar...

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File:Elements of meteorology. pt. II. Meteorological cycles; (IA elementsofmeteor00ticerich).pdf
Selasa, 2022-02-08 19:18:28

and twelve years. Sunspot observers such as Schwabe, Loewy, itself in a cycle etc., differ as to the maxima De la of sunspots as Rue, Wolf, much...

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File:Predicting the performance of band 7 communication systems using electronic computers (IA predictingperfor7619luca).pdf
Minggu, 2024-08-18 05:52:29

26 (d) Nines Card - -- -- -- -- -- -- -- -- -- - 26 (e) Month and Sunspot Number Card -------- 26 (f) Minus One Card - -- -- -- -- -- -- --...

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File:Ionospheric predictions for May 1963 (IA ionosphericpredi02cent).pdf
Senin, 2021-05-31 12:34:28

Zurich sunspot num¬ bers which show the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Basic radio propagation predictions for January 1949- three months in advance (IA basicradiopropag50inte).pdf
Minggu, 2024-08-18 19:33:28

Prediction of Annual Sunspot Numbers. CRPL-1-2, 3-1. High Frequency Radio Propagation Charts for Sunspot Minimum and Sunspot Maximum. CRPL-1-3. Some...

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File:Sunspot 2565 (28231210591).jpg
Minggu, 2025-03-09 22:16:27

DescriptionSunspot 2565 (28231210591).jpg Taken through a ND-5 thin film (.002" thick) polymer filter. That's ND-5 in astronomy, not ND-5 in photography...

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File:Report to wave propagation committee on status of work of I.R.P.L. (IA reporttowaveprop02inte).pdf
Jumat, 2024-08-16 02:37:46

Correlation curves (2) with 12-mo,running averages of monthly average sunspot numb©re. 40 Ratios of seasonal averages for data of (2) to running average®5...

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File:Ionospheric Data (IA ionosphericdata65cent).pdf
Jumat, 2024-08-16 23:55:19

Observed at Climax, Colorado 8 American and Zurich Provisional Relative Sunspot Numbers . • 9 Preliminary Mean K-Indices, Preliminary Inter¬ national...

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File:Mars2020 - Sol 1082 - MastCam-Z - Colorized (53574269534).png
Minggu, 2025-03-23 02:22:56

Creative Commons Attribution 2.0 truetrue 8 March 2024 English Looks like sunspot region 3590 has grown quite large... Denoised and sharpened. . NASA/JPL-Caltech/ASU/Kevin...

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File:Ionospheric predictions for March 1966 (IA ionosphericpredi36cent).pdf
Minggu, 2024-08-18 08:44:22

Printing Office, Washington D.C., 20402, price 40 cents. The predicted sunspot number used for this month is shown in table A, which also lists previous...

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File:Ionospheric predictions for April 1963 (IA ionosphericpredi01cent).pdf
Selasa, 2026-05-19 17:56:22

observed Zurich sunspot num¬ bers which show the recent trend of solar activity. Table A lists observed and predicted Zurich smooth relative sunspot numbers and...

Click to read more »
File:Ionospheric predictions for January 1964 (IA ionosphericpredi10cent).pdf
Sabtu, 2024-10-19 10:16:36

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Solar-geophysical data (IA solargeophysical249cent).pdf
Minggu, 2024-08-18 14:44:26

DAILY SOLAR INDICES (a) (b) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - March, April 1965 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Solar-geophysical data (IA solargeophysical221cent).pdf
Minggu, 2024-08-18 12:15:17

Sunspot Numbers and 2800 Me Solar Flux - November - December (b) Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) Calcium Plage and Sunspot Regiona...

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File:Solar-geophysical data (IA solargeophysical224cent).pdf
Minggu, 2024-08-18 12:41:05

(c) III Relative Sunspot Numbers and 2800 Me Solar Flux - February-March 1963 Graph of Sunspot Cycle Calcium Plage and Sunspot Regions - March 1963...

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File:Basic radio propagation predictions for May 1948- three months in advance (IA basicradiopropag42inte).pdf
Minggu, 2024-08-18 04:10:56

together with a pre¬ dicted smoothed 12-month running-average Zurich sunspot number of 130, centered on May 1948. Attention is invited to the blank...

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File:Solar-geophysical data (IA solargeophysical233cent).pdf
Minggu, 2024-08-25 22:56:05

SOLAR INDICES (a) (b) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - November - December 1963 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Ionospheric predictions for February 1965 (IA ionosphericpredi23cent).pdf
Minggu, 2025-09-07 11:09:34

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Ionospheric Data (IA ionosphericdata77cent).pdf
Kamis, 2025-04-03 12:19:25

Quality Figures.7, 33 Observations of the Solar Corona.8, 34, 40 Relative Sunspot Numbers.9, 44 Observations of Solar Flares . 10, 45 Indices of Geomagnetic...

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File:Solar-geophysical data (IA solargeophysical211cent).pdf
Minggu, 2024-08-18 12:16:22

(b) (c) Relative Sunspot Numbers and 2800 Me Solar Flux - January - February 1962 Graph of Sunspot Cycle Zurich Final Relative Sunspot Numbers 1961 II...

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File:Ionospheric predictions for November 1964 (IA ionosphericpredi20cent).pdf
Sabtu, 2024-08-24 22:44:18

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:The Sun in Our Space Lives - M. Thangavelu Naples Talk Oct 3rd, 2024.pdf
Minggu, 2026-05-03 16:21:54

10/3/2024 31 NOAA graph of sunspot numbers over the past 20 years and the predicted numbers for cycle 25 in red (main) and sunspots on the sun (inset). August...

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File:Sunspot planet trail.jpg
Sabtu, 2024-08-10 17:27:36

DescriptionSunspot planet trail.jpg English: New Mexico Highway 6563, exiting the New Mexico Solar Observatory. Date 25 August 2017, 16:33:09 Source Own...

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File:Solar-geophysical data (IA solargeophysical227cent).pdf
Minggu, 2024-08-18 06:49:55

Relative Sunspot Numbers and 2800 Me Solar Flux - May - June (b) Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions...

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File:Basic radio propagation predictions for January 1948- three months in advance (IA basicradiopropag38inte).pdf
Minggu, 2024-08-18 12:54:21

1947, together with a predicted smoothed 12-month running-average Zurich sunspot number of 130, centered on January 1948. Attention is invited to the blank...

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File:Sunspot Jonz 2022.jpg
Rabu, 2025-08-13 22:51:16

DescriptionSunspot Jonz 2022.jpg English: Los Angeles summertime hills Date 16 July 2022 Source Own work Author CleophusJ...

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File:Postcards from the Edge of the Universe book (ann1055a).tiff
Minggu, 2025-07-20 14:10:58

English From sunspots to black holes, planets around other stars, supernovae and dark matter, Postcards from the Edge of the Universe unveils the mysteries...

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File:Basic radio propagation predictions for June 1948- three months in advance (IA basicradiopropag43inte).pdf
Minggu, 2024-08-18 01:59:15

together with a pre¬ dicted smoothed 12-month running-average Zurich sunspot number of 129, centered on June 1948. Attention is invited to the blank...

Click to read more »
File:Ionospheric predictions for November 1963 (IA ionosphericpredi08cent).pdf
Minggu, 2024-08-18 13:27:24

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:William Herschel - Sunspot drawing of sunspot and depth profile (detail), 1801.jpg
Rabu, 2025-04-30 14:30:35

Wilhelm Herschel, 1738–1822) Description William Herschel: Drawing of sunspot and its surmised depth structure, 1801 Date 1801 date QS:P571,+1801-00-00T00:00:00Z/9...

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File:Sunspot num graph sm.gif
Selasa, 2024-05-28 00:23:53

DescriptionSunspot num graph sm.gif English: This graph shows the number of sunspots seen each year for 400 years (from 1600 to 2000). There were almost...

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File:Ionospheric predictions for July 1965 (IA ionosphericpredi28cent).pdf
Minggu, 2024-08-18 08:39:11

Zurich sunspot numbers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:William Herschel - Sunspot drawing of sunspot and depth profile, 1801.jpg
Selasa, 2024-08-27 04:44:27

Wilhelm Herschel, 1738–1822) Description William Herschel: Drawing of sunspot structure, 1801 Date 1801 date QS:P571,+1801-00-00T00:00:00Z/9 Medium Black...

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File:Ionospheric predictions for August 1965 (IA ionosphericpredi29cent).pdf
Minggu, 2024-08-18 08:43:58

Zurich sunspot numbers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Solar-geophysical data (IA solargeophysical250cent).pdf
Minggu, 2024-08-25 07:40:39

Sunspot Numbers and 2800 Mc/s Solar Flux - April, May 1965 Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) (c) Calcium Plage and Sunspot Regions...

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File:Solar-geophysical data (IA solargeophysical232cent).pdf
Minggu, 2024-08-25 18:34:44

DAILY SOLAR INDICES (a) (b) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - October-November 1963 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Solar-geophysical data (IA solargeophysical247cent).pdf
Minggu, 2024-08-18 12:43:01

INDICES (a) (b) (c) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - January, February 1965 Graph of Sunspot Cycle Final Sunspot Numbers (Zurich) 1964 II...

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File:Ionospheric predictions for July 1963 (IA ionosphericpredi04cent).pdf
Senin, 2021-05-31 12:34:29

Zurich sunspot numbers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Basic radio propagation predictions for March 1948- three months in advance (IA basicradiopropag40inte).pdf
Rabu, 2024-08-21 00:43:28

1947, together with a predicted smoothed 12-month running-average Zurich sunspot number of 133, centered on March 1948. Attention is invited to the blank...

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File:Kennelly-Heaviside layer height observations for 4,045 and 8,650 kc (IA kennellyheavisid55105gill).pdf
Sabtu, 2022-04-09 09:41:06

evening tests are also described. Curves are given comparing heights with sunspot Records taken on April 28, 1930, the day of numbers and magnetic character...

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File:Ionospheric predictions for December 1965 (IA ionosphericpredi33cent).pdf
Senin, 2026-01-05 23:21:40

Printing Office, Washington D.C., 20402, price 40 cents. The predicted sunspot number used for this month is shown in table A, which also lists previous...

Click to read more »
File:Ionospheric predictions for August 1963 (IA ionosphericpredi05cent).pdf
Kamis, 2026-04-09 03:29:51

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Solar-geophysical data (IA solargeophysical244cent).pdf
Minggu, 2024-08-25 00:57:39

SOLAR INDICES (a) (b) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - October - November 1964 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Madjarska2019 Article CoronalBrightPoints.pdf
Jumat, 2025-11-14 18:51:33

interconnecting also bright loops overlay the strong magnetic fields of sunspots and faculae (1 × 1020 Mx to 3 × 1022 Mx, half of total unsigned flux, van...

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File:Solar-geophysical data (IA solargeophysical254envi).pdf
Kamis, 2020-09-10 19:38:40

DAILY SOLAR INDICES (a) (b) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - August, September 1965 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Scheiner Viewing Sunspots 1625.jpg
Senin, 2026-03-30 10:57:27

DescriptionScheiner Viewing Sunspots 1625.jpg English: Christoph Scheiner and a fellow Jesuit scientist trace sunspots in Italy in about 1625. Illustration...

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File:Ionospheric Data (IA ionosphericdata182cent).pdf
Minggu, 2024-08-18 12:41:48

Page Symbols, Terminology, Conventions . ii Predicted and Observed Sunspot Numbers. .... v World-Wide Sources of Ionospheric Data. .... vi Tabulations...

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File:Sunspot (50614123312).jpg
Jumat, 2024-09-06 18:37:13

DescriptionSunspot (50614123312).jpg Death Valley California <a href="http://gaylon-yancy.pixels.com" rel="noreferrer nofollow">gaylon-yancy.pixels.com</a>...

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File:Ionospheric Data (IA ionosphericdata31cent).pdf
Minggu, 2024-08-18 12:43:02

Washington, D.C. 7 Ionosphere Disturbances.. . 7 American Relative Sunspot Numbers . S Solar Coronal Intensities Observed at Climax, Colorado 9...

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File:Basic radio propagation predictions for February 1948- three months in advance (IA basicradiopropag39inte).pdf
Selasa, 2024-08-20 16:44:33

1947, together with a predicted smoothed 12-month running-average Zurich sunspot number of 133, centered on February 1948. Attention is invited to the blank...

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File:Sunspot AR 3664 (53708659527).jpg
Selasa, 2025-07-08 21:57:16

DescriptionSunspot AR 3664 (53708659527).jpg English: Sprawling almost 200,000 km from end to end, AR3664 is 15 times wider than Earth.  Date 1 January...

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File:Ionospheric Data (IA ionosphericdata70cent).pdf
Minggu, 2024-08-18 06:36:27

Ionosphere Disturbances Badio Propagation Quality figure® fielative Sunspot lumbers ............. Observations of the Solar Corona 8* 37 ..9,...

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File:Ionospheric Data (IA ionosphericdata19cent).pdf
Jumat, 2026-01-09 01:13:51

Variation of f°Fl, at sunspot number ■ C, with latitude, 1200 local time • ... . . . ..Fig. 92 Variation of f°Fl, at sunspot number s 100, with latitude...

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File:Ionospheric Data (IA ionosphericdata68cent).pdf
Jumat, 2026-03-20 01:45:04

Ionosphere Disturbances 7 . American and Zurich Provisional Eelative Sunspot Numbers . Observations of the Solar Corona. 8 9 Preliminary Mean K-Indices...

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File:Solar-geophysical data (IA solargeophysical202cent).pdf
Minggu, 2024-08-18 12:24:43

Relative Sunspot Numbers and 2800 Me Solar Flux April May 1961 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions...

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File:Solar-geophysical data (IA solargeophysical241cent).pdf
Minggu, 2024-08-18 07:04:43

DAILY SOLAR INDICES (a) (b) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - July - August 1964 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Ionospheric predictions for July 1964 (IA ionosphericpredi16cent).pdf
Minggu, 2024-08-25 17:23:11

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Sunspot 2434 and 2435 (22098398939).jpg
Jumat, 2024-09-06 21:48:59

DescriptionSunspot 2434 and 2435 (22098398939).jpg 2434 is in the lower center with 2435 coming around from the left. Taken through a ND-5 thin film (...

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File:Solar-geophysical data (IA solargeophysical200cent).pdf
Rabu, 2026-03-18 23:20:35

Sunspot Numbers and 2800 Me Solar Flux February - March 1961 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions...

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File:Lincoln National Forest ... stakeholders report (IA CAT31364955).pdf
Minggu, 2026-03-29 03:38:11

ocated L in Sunspot, N.M., the National on public lands managed by the Sacramento Ranger Solar Observatory District of the The Sunspot first opened...

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File:Cosmical evolution, critical and constructive (IA cosmicalevolutio00mclerich).pdf
Rabu, 2024-04-17 00:31:35

of Sunspots and Their 240 CONTENTS xviii PAGE ARTICLE. 137. The Zodiacal Light and 139. Sunspot Periods Explanation of Anomalous Sunspot Periods...

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File:Solar-geophysical data (IA solargeophysical239cent).pdf
Senin, 2026-03-23 21:46:22

Sunspot Numbers and 2800 Mc/s Solar Flux - May - June 1964 Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) (c) Calcium Plage and Sunspot Regions...

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File:Ionospheric Data (IA ionosphericdata64cent).pdf
Rabu, 2024-11-13 08:58:08

Observed at Climax, Colorado 8 American and Zurich Provisional Relative Sunspot Numbers 9 Preliminary Mean K>Indices, Preliminary International Character...

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File:Solar-geophysical data (IA solargeophysical210cent).pdf
Minggu, 2024-08-25 23:08:59

SOLAR INDICES (a) (b) II Relative Sunspot Numbers and 2800 Me Solar Flux - December 1961-January 1962 Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY...

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File:Ionospheric Data (IA ionosphericdata76cent).pdf
Minggu, 2025-05-11 01:09:05

Between Radio Propagation Disturbance and Central Meridian Passage of Sunspots Grouped by Distance From Center of Disc. **R30. Disturbance Rating in Values...

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File:Ionospheric predictions for September 1963 (IA ionosphericpredi06cent).pdf
Senin, 2021-05-31 12:34:29

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Ionospheric predictions for May 1964 (IA ionosphericpredi14cent).pdf
Senin, 2021-05-31 12:34:29

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Solar-geophysical data (IA solargeophysical212cent).pdf
Selasa, 2024-08-27 02:50:22

ACTIVITY (a) (b) (c-e) Calcium Plage and Sunspot Regions - March 1962 Magnetic Classifications of Sunspots (Mt. Wilson) - March 1962 Final Coronal Line...

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File:Sunspot group.jpg
Sabtu, 2026-03-07 04:41:39

DescriptionSunspot group.jpg English: Big spunspot group with multiple light bridges Suomi: Suuri auringonpilkkuryhmä fotosfäärissä. Moniosainen valosilta...

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File:Carrington Richard drawing of 1859 sunspots.jpeg
Jumat, 2025-11-14 11:18:48

DescriptionCarrington Richard drawing of 1859 sunspots.jpeg Drawing of sunspots by Richard Carrington (1826-1875), the English astronomer Date 1 September...

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File:Sun Sunspot by Deddy dayag.jpg
Kamis, 2025-10-09 12:36:28

DescriptionSun Sunspot by Deddy dayag.jpg English: This image was captured using a 152mm refractor telescope and Daystar Quark chromosphere filter from...

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File:Solar-geophysical data (IA solargeophysical222cent).pdf
Jumat, 2025-11-21 07:32:42

SOLAR INDICES (a) (b) Relative Sunspot Numbers and 2800 Me Solar Flux - December 1962- January 1963 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Solar-geophysical data (IA solargeophysical209cent).pdf
Sabtu, 2024-08-24 20:07:14

DAILY SOLAR INDICES (a) (b) Relative Sunspot Numbers and 2800 Me Solar Flux - November - December 1961 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Ionospheric Data (IA ionosphericdata67cent).pdf
Kamis, 2026-03-26 08:24:44

Colorado • • . ........ B American and Zurich Provisional Relative Sunspot Numbers. 9 Preliminary Mean K®Indices, Preliminary Inter® national Character...

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File:Ionospheric Data (IA ionosphericdata62cent).pdf
Sabtu, 2020-09-05 02:59:34

Ionosphere Disturbances . 7 American and Zurich Provisional Relative Sunspot Numbers . 8 Solar Coronal Intensities Observed at Climax, Colorado ....

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File:Sunspot Astronomy and Visitor's Center.jpg
Sabtu, 2025-09-06 20:54:46

DescriptionSunspot Astronomy and Visitor's Center.jpg English: Sunspot Visitor Center and Museum, a joint project between the National Solar Observatory...

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File:Sunspot (2461477919).jpg
Sabtu, 2026-01-31 02:10:19

DescriptionSunspot (2461477919).jpg Sunspot Date 3 May 2008, 06:17 Source Sunspot Author Axel Kristinsson from Reykjavík, Iceland...

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File:RBerteig - Partial Phase and Sunspots (by).jpg
Minggu, 2025-08-03 20:08:30

DescriptionRBerteig - Partial Phase and Sunspots (by).jpg The total eclipse of March 29, 2006. Seen from the deck of the Pan Orama from a spot on the centerline...

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File:Ionospheric predictions for June 1965 (IA ionosphericpredi27cent).pdf
Selasa, 2026-02-03 06:14:28

Zurich sunspot numbers which shows the recent trend of solar activity. Table vA lists observed and predicted Zurich smoothed relative sunspot numbers...

Click to read more »
File:Integration of robotics and 3D visualization to modernize the Expeditionary Warfare Demonstrator (EWD) (IA integrationofrob109454520).pdf
Rabu, 2025-10-22 07:55:31

communication capability within Sun’s Small Programmable Object Technology (SunSPOT) to create robotic vehicles to replace the current ship models. This enables...

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File:Ionospheric Data (IA ionosphericdata57cent).pdf
Minggu, 2024-08-18 06:26:13

Observed at Climax, Colorado. . 8 American and Zurich Provisional Relative Sunspot Numbers ........ . £ Tables of Ionospheric Data ...... . 9 Graphs...

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File:Sunspot Region 2671 (35910275833).jpg
Jumat, 2026-04-10 10:35:03

DescriptionSunspot Region 2671 (35910275833).jpg Sunspot Region 2671 Date 21 August 2017, 14:52 Source Sunspot Region 2671 Author Kevin Gill from Los...

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File:Ionospheric predictions for December 1963 (IA ionosphericpredi09cent).pdf
Jumat, 2024-08-16 23:55:28

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

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File:Ionospheric Data (IA ionosphericdata71cent).pdf
Minggu, 2024-08-18 12:07:38

.. 7,34 Radio Propagation Quality Figures ........ 7, 38 Relative Sunspot Numbers 8,39 ..... . Observations of the Solar Corona .. 9, 40 Observations...

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File:Preliminary spectroradiometric measurements of the solar constant (IA jresv57n4p205).pdf
Minggu, 2024-08-18 05:08:31

Spectl'oradiometric measurements of the distribution of direc t solar radiation at Sunspot, New Mexico (altitude 9,200 feet). in June 1955 are d escribed. Detailed...

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File:Paikeseplekid torvas 2022.jpg
Jumat, 2026-01-23 05:46:17

Creative Commons Attribution-Share Alike 4.0 truetrue English Sun and sunspots author name string: Nielander Wikimedia username: Nielander URL: https://commons...

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File:Solar-geophysical data (IA solargeophysical175cent).pdf
Minggu, 2024-08-18 12:22:42

SOLAR INDICES (a) (b) (c) Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle Final Relative Sunspot Numbers, R2, for 1958 II SOLAR CENTERS...

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File:Ionospheric Data (IA ionosphericdata66cent).pdf
Minggu, 2024-08-18 06:14:42

Ionosphere Disturbances •. 7 American and Zurich Provisional Relative Sunspot Numbers ..••••• . •• 8 Solar Coronal Intensities Observed at Climax,...

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File:Ionospheric Data (IA ionosphericdata59cent).pdf
Rabu, 2024-08-28 01:39:42

Ionosphere Disturbances ....... . ... American and Ziirich Provisional Relative Sunspot Numbers .. 6 8 Solar Coronal Intensities Observed at Climax, Colorado...

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File:Ionospheric Data (IA ionosphericdata58cent).pdf
Selasa, 2024-10-29 04:41:24

Ionosphere Disturbances . . American and Zurich Provisional Relative Sunspot Numbers. 6 £ Solar Coronal Intensities Observed at Climax, Colorado...

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File:Astronomy without a telescope; a guide to the constellations, and introduction to the study of the heavens with the unassisted sight (IA astronomywithout00maunrich).pdf
Kamis, 2023-09-28 14:10:57

X. CONTENTS. CHAPTER TV. SUNSPOTS AND MOONSPOTS. PAGE. Drawing the Moon with the naked-eye of sunspots Sunspot curve ... Naked-eye observation...

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File:Photosphere.jpg
Selasa, 2026-04-21 23:34:18

Commons Attribution 4.0 truetrue English Solar photosphere showing several sunspots during solar maximum of cycle 25 Finnish Auringon fotosfääriä, jossa näkyy...

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File:Solar-geophysical data (IA solargeophysical255envi).pdf
Minggu, 2024-08-18 13:48:41

Revisions to Descriptive Text Relative Sunspot Numbers and 2800 Mc/s Solar Flux - September, October 1965 Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY...

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File:Ionospheric Data (IA ionosphericdata129cent).pdf
Sabtu, 2025-09-13 04:54:57

.... 8, 40 Observations of the Solar Corona. ..... 9, 42 Relative Sunspot Numbers. .... . 10, 48 Observations of Solar Flares. ....... 11, 50...

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File:Sunspot Mirage.JPG
Sabtu, 2025-07-19 09:23:27

DescriptionSunspot Mirage.JPG Superior Mirage of sunspot #930 Date 1/08/2007 Source Own work Author Brocken Inaglory...

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File:Solar-geophysical data (IA solargeophysical207cent).pdf
Selasa, 2025-02-04 08:45:56

DAILY SOLAR INDICES (a) Relative Sunspot Numbers and 2800 Me Solar Flux September October 1961 (b) Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY...

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File:Doppler shift and spread study for ionospherically propagated signals (IA dopplershiftspre00mala).pdf
Selasa, 2025-12-16 23:30:49

MHz at sunspot noon values of f E the Wolf of Zurich of sunspot groups; S is the minimum and are in the range of 3-4 sunspot number correction...

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File:Solar-geophysical data (IA solargeophysical203cent).pdf
Minggu, 2024-08-25 20:04:59

Relative Sunspot Numbers and 2800 Me Solar Flux May June 1961 Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions...

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File:Climatic changes- their nature and causes (IA climaticchangest00huntiala).pdf
Kamis, 2024-03-21 08:12:03

present volume. Earth and Sun: In press. An Hypothesis of Weather and Sunspots. New Haven. STEPHEN SARGENT VISHER Geography, Geology and Biology of...

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File:Solar-geophysical data (IA solargeophysical240cent).pdf
Kamis, 2020-09-10 19:33:06

Sunspot Numbers and 2800 Mc/s Solar Flux - June - July 1964 (b) Graph of Sunspot Cycle II SOLAR CENTERS OF ACTIVITY (a) Calcium Plage and Sunspot...

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File:Astronomy (IA astronomy00hinkrich).pdf
Kamis, 2023-09-28 13:59:49

the daily swing is closely associated the number of sunspots, and upon some days when sunspots are unusually active we have what is called a magnetic...

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File:Ionospheric predictions for June 1964 (IA ionosphericpredi15cent).pdf
Minggu, 2024-08-18 13:26:35

Zurich sunspot num¬ bers which shows the recent trend of solar activity. Table A lists observed and predicted Zurich smoothed relative sunspot numbers...

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File:Ionospheric Data (IA ionosphericdata69cent).pdf
Minggu, 2024-08-18 06:21:51

Between Radio Propagation Disturbance and Central Meridian Passage of Sunspots Grouped by Distance From Center of Disc. R30. Disturbance Rating in Values...

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File:Sunspot 10981 Solar Cycle 24.jpg
Senin, 2026-05-18 21:33:21

DescriptionSunspot 10981 Solar Cycle 24.jpg English: First official sunspot belonging to the new Solar Cycle 24. Date 8 January 2008 Source http://www...

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File:Ionospheric predictions for September 1965 (IA ionosphericpredi30cent).pdf
Senin, 2021-05-31 12:34:29

Printing Office, Washington D.C., 20402, price 40 cents. The predicted sunspot number used for this month is shown in table A, which also lists previous...

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File:Solar-geophysical data (IA solargeophysical163cent).pdf
Minggu, 2024-08-18 07:15:49

II Relative Sunspot Numbers and 2800 Me Solar Flux Graph of Sunspot Cycle SOLAR CENTERS OF ACTIVITY (a) (b) Calcium Plage and Sunspot Regions Coronal...

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