Electricity is all around us, even inside us. Move your little finger and already thousands of tiny electric signals move the finger. In our daily lives, almost all practical gadgets are powered by electricity. Here is an original, easy introduction into this exciting field of science.
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May 22, 2000 -- From Tom F., a reader from Garden Grove, CA who is not affiliated with the site
A simple illustrated explanation that shows the difference between alternating current (AC) and direct current (DC).