EM3.3 Franklin's Gong

This demonstration has a silver-coated ping-pong ball hanging between the plates of a parallel plate capacitor. Using the Van de Graaff generator to put a charge onto the capacitor, the ball will become charged as well. It will be attracted to one side, hit the plate, gain that plates charge, and be repelled to the other plate, where the same thing happens. As it swings from plate to plate, it makes the sound of a gong.

Equipment Location: Shelf D4-3