From the Low Temperature Lab: a short movie exhibiting the quantum mechanical phenomenon of superconductivity and a brief explanation of one of its most intriguing consequences -- magnetic levitation and suspension. demonstrations include levitation above a ferromagnet, levitation above a magnetic track, and levitation/suspension on a magnetic roller coaster track. Paper link: arxiv.org See the high res version at www.ithaca.edu

http://www.youtube.com/v/1zwBoBbHR4I?f=videos&app=youtube_gdata

Go here to see the original:
Levitation and Suspension of Superconductors via Magnets