Larry Woolf
General Atomics
www.sci-ed-ga.org
www.ga.com
-----Original Message-----
From: Forum for Physics Educators On Behalf Of Larry Smith
Sent: Friday, March 25, 2005 8:49 AM
Subject: Why 60 hertz?
A student asked the historical question about why America chose wall AC to
be 60 hertz and why Europe chose 50 hertz. I'm interested myself.
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