Hi All,

Lee Ann and I were invited over to John and Jan Lahr's
to explore stable/static diagmagnetic levitation today.
John has built afew devices, and we used acouple to
test out a variety of neodymium magnets of various
sizes and shapes; and also a variety of graphite/carbon
DC motor commutator brushes, for their effects. 

While we primarily tried a number of brushes, we were
also easily able to levitate about 5 different neodymium
magnets of different shapes and sizes relatively easily.
My preconception of difficulty in adjustments went out
the window.  Thus far, the magnet size limit seemed to
be having enough diagmagnetic material to cover above
and below the magnets.  The largest piece was about
3/4" long by about 3/8's" wide, by around 1/16" thick. 

It was a most interesting afternoon.  I whomped up a
fast web page for those interested in diagmagnetics;
but without alot of details. 

http://www.users.uswest.net/~mlamb1/index.html

Thanks John and Jan for all the effort and demonstrations,
it was very, very interesting.  It doesn't seem that long
ago, that the top science news was levitating a magnet on
a cyrogenic supercooled magnet device....one doesn't need
that fancy equipment.

Meredith and Lee Ann Lamb



 


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