electroscope

Noun. (physics) a simple device that detects the presence of an electric charge by the mutual repulsion of metal foils or pith balls.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.