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An instrument used to detect the presence, sign, and in some configurations the magnitude of an electric charge by the mutual attraction or repulsion of metal foils or pith balls.
e·lec′tro·scop′ic (-skŏp′ĭk) adj.
(General Physics) an apparatus for detecting an electric charge, typically consisting of a rod holding two gold foils that separate when a charge is applied
a device for detecting the presence and determining the sign of electric charges by means of electrostatic attraction and repulsion, often between two pieces of gold leaf enclosed in a glass-walled chamber.
e•lec`tro•scop′ic (-ˈskɒp ɪk) adj.
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|Noun||1.||electroscope - measuring instrument that detects electric charge; two gold leaves diverge owing to repulsion of charges with like sign|