On Wed, 24 Jun 2009, David Jonsson wrote: > Hi > > I read on Wikipedia that "it is impossible to set up a voltage difference in > a superconductor".
WP is wrong. It's impossible to set up a DC voltage difference. If you wave a magnet near a superconductor, and its electron-sea starts flowing in loops, those electrons got pushed by induced voltages present across the superconductor. But those voltages are transient, AC voltage caused by the moving magnet. (((((((((((((((((( ( ( ( ( (O) ) ) ) ) ))))))))))))))))))) William J. Beaty SCIENCE HOBBYIST website billb at amasci com http://amasci.com EE/programmer/sci-exhibits amateur science, hobby projects, sci fair Seattle, WA 206-762-3818 unusual phenomena, tesla coils, weird sci
