A gold leaf electroscope is a very simple but effective device. It consists of a zinc plate at the top which can pick up or detect some charge. The charge is taken down a metal rod inside the electroscope. Attached to this rod is a single piece of gold leaf. This is very light and can easily move. Both the rod and the gold leaf pick up the same charge. Because of the fact that like charges repel, the gold leaf moves away from the rod and we can detect the charged particles.
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how does a gold leaf electroscope work
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