On Tue, 29 Aug 2006, peatbog wrote: > I thought that anything that blocked a magnet's attraction was also > attracted to it, so that there is extra work needed to insert or > remove the shield from between the magnets.
If you give the system a spin, then a shield can move in and out (which would make the wheel turn jerkily, but not halt.) It's like throwing a train car down a track which goes over a series of hills. If it can make it past the first hill, then it probably can make it past all the others too. (((((((((((((((((( ( ( ( ( (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 425-222-5066 unusual phenomena, tesla coils, weird sci
