Electroscope definition

ĭ-lĕktrə-skōp
An instrument for detecting very small charges of electricity, electric fields, or radiation: it can indicate whether they are positive or negative, as by the divergence of electrically charged strips of gold leaf: when fitted with optical means for quantitative observation of the divergence, an electroscope serves as an electrometer.
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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.
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(physics) A simple device that detects the presence of an electric charge by the mutual repulsion of metal foils or pith balls.
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Other Word Forms

Noun

Singular:
electroscope
Plural:
electroscopes

Origin of electroscope

  • electro- +‎ -scope

    From Wiktionary