McCarthy, Dennis D. Formerly, Time Service Division, U.S. Naval Observatory, Washington, DC.
Last reviewed:January 2020
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A clock that makes use of the piezoelectric property of a quartz crystal. Piezoelectricity refers to the ability of some materials to generate an electric potential when mechanically stressed (the direct piezoelectric effect) or the ability of a material to stress or strain when an electric potential is applied (the inverse piezoelectric effect). The direct effect was first demonstrated in 1880 by Jacques and Pierre Curie. See also: Piezoelectricity
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