Re: Levitation without Diamagnetics

[William Beaty <billb@ESKIMO.COM>]

On Wed, 28 Jun 2000, brian whatcott wrote:

> It featured a bobbin suspended horizontal on two pairs of magnets,
> and restrained against horizontal displacement to one end with a ball
> point on one end of the bobbin, bearing on a little vertical glass plate.
>
> The bobbin will continue for some time, when it is spun into rotation.

The local science store has the next generation of that toy.  The bobbin
contains a small battery, coil, and some type of commutator (maybe a
hall-effect sensor).  When spun, it speeds up to a constant RPM, and keeps
running until the battery dies.  With blinking LEDS too!  All done while
levitating.


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William J. Beaty                                  SCIENCE HOBBYIST website
billb@eskimo.com                                  http://www.amasci.com
EE/programmer/sci-exhibits          science projects, tesla, weird science
Seattle, WA   206-781-3320          freenrg-L taoshum-L vortex-L webhead-L