gold-leaf electroscope
  • An instrument which detects electric charges by means of electrostatic forces. It consists of two gold leaves which are suspended side by side from a conducting rod which is held by an insulated support, and placed in a grounded enclosure, such as a glass jar. When a charge is applied to a plate to which the rod is connected, the leaves separate due to their mutual repulsion. One variation involves having one fixed plate along with a single leaf.

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