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Caption: Gold leaf electrometer. This is an instrument for measuring static charges. If a rod charged with static electricity is brought near the terminal of an electroscope, the plate becomes charged by static induction, and the charge passes down into the electroscope itself. There, a hinged gold leaf (seen here at rest) also becomes charged and is repelled by the vertical metal plate. The amount of charge can be read from the scale.

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Keywords: charge, charged, cut out, cut-out, cutout, demonstration, electricity, electrometer, electroscope, electrostatics, experiment, experimental, gold leaf, inductive charging, instrument, laboratory, like charges, no-one, nobody, physics, repelled, repulsion, school science, science education, static electricity, static induction, white background

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