Magnetisk levitation
Magnetisk levitation (maglev fra engelsk magnetic levitation) er en metode, hvorved en genstand ophænges uden anden støtte end magnetiske felter. Magnetisk kraft bruges til at modvirke virkningerne af gravitation og andre kræfter.
De to primære udfordringer involveret i magnetisk levitation er løftekrafter: at give en opadgående kraft, der er tilstrækkelig til at modvirke gravitation - og stabilitet: at sikre, at systemet ikke spontant glider eller vipper ind i en konfiguration, hvor løftekraften er neutraliseret.
Magnetisk levitation bruges til magnettog, kontaktløs smeltning, magnetiske lejer og til produktvisningsformål.
Referencer
- ^ Hermansen, Joachim Marco; Laust Durhuus, Frederik; Frandsen, Cathrine; Beleggia, Marco; R.H. Bahl, Christian; Bjørk, Rasmus (13. oktober 2023). "Magnetic levitation by rotation". Phys. Rev. Appl. 20 (4): 044036-044051. arXiv:2305.00812. Bibcode:2023PhRvP..20d4036H. doi:10.1103/PhysRevApplied.20.044036. S2CID 258426320. Hentet 23. oktober 2023.
- ^ Youtube demonstration: Magnetic Levitation Demonstrated Using a Dremel Tool Spinning a Magnet at 266 Hz
Eksterne henvisninger
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