piezoelectricity


pi·e·zo·elec·tric·i·ty

noun \-ˌlek-ˈtri-s(ə-)tē\

Definition of PIEZOELECTRICITY

:  electricity or electric polarity due to pressure especially in a crystalline substance (as quartz)

Origin of PIEZOELECTRICITY

International Scientific Vocabulary
First Known Use: 1883

Other Physics Terms

amplitude, centrifugal, centripetal, convection, gradient, hysteresis, kinetic, lase, quantum

pi·ezo·elec·tric·i·ty

noun \-ˌlek-ˈtris-ət-ē, -ˈtris-tē\   (Medical Dictionary)
plural pi·ezo·elec·tric·i·ties

Medical Definition of PIEZOELECTRICITY

: electricity or electric polarity due to pressure especially in a crystalline substance (as quartz)

piezoelectricity

noun    (Concise Encyclopedia)

Appearance of an electric field in certain nonconducting crystals as a result of the application of mechanical pressure. Pressure polarizes some crystals, such as quartz, by slightly separating the centers of positive and negative charge. The resultant electric field is detectable as a voltage. The converse effect also occurs: an applied electric field produces mechanical deformation in the crystal. Using this effect, a high-frequency alternating electric current (see alternating current) can be converted to an ultrasonic wave of the same frequency, while a mechanical vibration, such as sound, can be converted into a corresponding electrical signal. Piezoelectricity is utilized in microphones, phonograph pickups, and telephone communications systems.

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