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As this book goes to press: "The Electric Library currently contains 7,933,923 newspaper articles, 774,856 magazine articles, over 419,040 book chapters, 1,103 maps, 86,302 television and radio transcripts, and 57,303 photos and images!" There is also an encyclopedia, Monarch Notes, and a fair number of reference books. You can search topics for free, but if you want to read the full text of the articles, you must become a member. There's a 30-day free trial offer.
www.webhome.idirect.com/~jadams/electronics/ Do you know the difference between a parallel electrical circuit and one that is in series? You will within moments of opening this Web page! It's a real beginner's guide to the topic and includes many illustrations and clear explanations. There are also some cool calculators for Ohm's law and other topics, plus a guide to multi-meter use and a handy chart of schematic symbols.
Did you ever get zapped by touching a metal doorknob at home? Where'd the electricity come from? Static electricity built up on your shoes as you walked across a carpet. Scientists who need a lot of static electricity for an experiment us a Van de Graaff generator, which makes electricity from a revolving belt inside on of its towers. Read about its history and construction and all about lightning and electricity. You can see the huge original generator, built by Dr. Robert J. Van de Graaff, in the Theater of Electricity at the Museum of Science in Cambridge, Massachusetts, and on this World Wide Web site. You probably won’t have a generator like this at home, but at this site you'll find some experiments you can do with balloons, paper bunnies, and static electricity!
http://www.hydro.org/waterworks Water, Water Everywhere -- But do you know
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Electricity
Electric Library Personal Edition