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On Mon, 10 Mar 1997, JFDWG wrote:
I tried a classic demonstration of dropping a magnet through a copper
tube at the same time as dropping an unmagnetized bar. They both
landed at the same time.
I think this demo is normally done with neodymium supermagnets. The
magnet should be a stubby rod in shape, with only a small clearance around
the tube, a "slip-fit" in other words.
.....................uuuu / oo \ uuuu........,.............................
William Beaty voice:206-781-3320 bbs:206-789-0775 cserv:71241,3623