Simple. The base is actually made of multiple magnets, (cheaper versions are a
variety of magnets and metal bars).
When you turn the handle it simply lines up the magnets
so they are all polarized in the same direction (north south poles in same
direction)
thus increasing the total magnetic field.
example three magnets - poles opposed N-SS-NN-S, etc ) the field almost
cancels itself. When lined up N-SN-SN-S all the fields add, strengthening
the field.
(we use them here for all kinds of stuff in the optical engineering lab)
Paul Tegler wizardz@toad.net http://www.teglerizer.com
----- Original Message -----
From <Mjsprite at aol.com>
To: "Spridgeteers" <spridgets@autox.team.net>
Sent: Wednesday, November 08, 2000 12:48 AM
Subject: magnet on/off switch
Hey everyone,
I bought a magnetic stand for my dial indicator to use while blueprinting a
1380 engine. For the life of me, I can't figure out how this magnet works. A
simple turn of the switch creates a very powerful magnet in the base. Turn
the switch back and there's no attraction whatsoever. No batteries or
electricity. This really intrigues me. Can anyone explain how this works?
Mike
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