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Piezo strips
Piezo ... what?
In 1880 Jacques and Pierre Curie discovered piezoelectricity. The name comes from the Greek word "piezo" ("pressure"). The two scientists exerted mechanical pressure on a tourmaline crystal and noted a measurable electrical voltage on the surface caused by the resulting deformation. They successfully conducted this experiment also using other crystals like quartz, topaz and potassium sodium tartrate (Rochelle salt).
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