Did you also see the Resources section of our web site on the topic of
Electricity and magnetism? It's at
http://www.exploratorium.edu/ti/resources/electricityandmagnetism.html
Hope that helps. I'm passing your question around to see if I can get any
other suggestions for you.
Nina Thayer
Snacktalk Moderator
Exploratorium
3601 Lyon Street
San Francisco, CA 94123-1099
nthayer@exploratorium.edu
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