Hi William, Please elaborate on the Meissner effect vs. just 0 ohms. I understood that superconductors reject magnetic fields entirely in a different way than just induced currents.
thanks, Hoyt Stearns Scottsdale, Arizona US On Wed, Jun 24, 2009 at 1:32 PM, William Beaty <[email protected]> wrote: > 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 > > -- Hoyt A. Stearns Jr. 10845 N. 120th St. Scottsdale, Arizona US 85259-4166 http://HoytStearns.com 1+480 699 7110
