ELECTROSCOPE

electroscope

(noun) measuring instrument that detects electric charge; two gold leaves diverge owing to repulsion of charges with like sign

Source: WordNet® 3.1

Etymology

Noun

electroscope (plural electroscopes)

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

Source: Wiktionary

E*lec"tro*scope, n. Etym: [Electro- + -scope: cf. F. électroscope.] (Physics)

Definition: An instrument for detecting the presence of electricity, or changes in the electric state of bodies, or the species of electricity present, as by means of pith balls, and the like. Condensing electroscope (Physics), a form of electroscope in which an increase of sensibility is obtained by the use of a condenser.

Source: Webster’s Unabridged Dictionary 1913 Edition

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