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heh, some friends (and teammates) of mine built a Tesla coil, and that thing is AWESOME!(edit: as posted above, the tesla coil doesn't arc current to the bulb, the bulb just lights up, no arc. It is pretty amazing)
They have a video in which they turn it on and cut the lights . .. then wave aroung a flourescent bulb . . . the coil got that pretty bright! Definatly worth the time. VanDeGraf (whatever is called) is also incredibly cool (but not tesla coil cool). Get a bunch friends to hold hands, have one touch the ball, turn it on . . they won't feel anything much . . but then ground the ball with no warning and they will be on the ground. Our physics teacher did that to us and it was one of the funniest things I have ever experienced.
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