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Re: jumping ring demo



The answer I was referring to in my previous post was from Karl Trappe
-- sorry for being unspecific (I hate to quote...).
One of his suggested references (AJP 39, p.285) had the explanation
I was looking for. The current in the ring is not in phase with the
induced emf.
It also persuaded me that despite an imminent move to a smaller office,
I should keep all those old AJP's handy!
--
Martha Takats
Department of Physics and Astronomy
Ursinus College
Collegeville, PA 19426