You wrote;
> If I were you I would not waste time heating bulky magnets and try
> cooling them at rapid rates when you can do the same effect by
> heating and cooling thin steel strips very rapidly.
Agreed, that is what our friend said, metal is brought near a magnet and
is attracted. You heat the metal and it loses the attraction.
Pyromagnetism. I should have been more specific about the difference
between heating metal and opposed to actually heating the magnet.
The diagram our friend sent (what is your FAX number??? so I can send
them to you), shows this heating of metal clearly, particularly the
metal ring that rotates....
The ring looks like a bicycle rim but is hanging on a pivot point and
balanced. A heavy magnet is on one side and a propane torch near the
magnet (but not heating it)...the magnetic field induced in the rim of
this wheel is then snuffed by the pyromagnetic quenching of the flame,
so the wheel spins away from the flame and is cooled as it spins to
repeat the cycle...a marvelous demonstration....FAX, FAX, FAX...to my
email unless you want to broadcast it...<g>....
-- Jerry W. Decker / jdecker@keelynet.com http://keelynet.com / "From an Art to a Science" Voice : (214) 324-8741 / FAX : (214) 324-3501 KeelyNet - PO BOX 870716 - Mesquite - Republic of Texas - 75187