Pierre Curie and his brother discovered this phenomenon and used it to build instruments that could measure radioactivity.
Many materials that exhibit this phenomenon can be characterized by just the coefficients d-three-one, d-three-three, and d-one-five, but one also needs d-two-five and d-three-two when using the orthotropic polymer poly•vinyl•i•dene fluoride. This phenomenon is displayed by many wurtzite and zincblende semiconductors, such as zinc oxide, cadmium sulfide, and gallium arsenide, because they lack a center of inversion. Strain gauges based on this phenomenon measure voltage, not resistance; are commonly based on the (*) ceramic lead zirconate titanate; and are used as the transducers in many microphones. Pierre Curie and his brother discovered this phenomenon and used it to build instruments that could measure radioactivity. Rochelle salts and quartz exhibit, for 10 points, what phenomenon in which the elastic strain and electric field are coupling in a crystal, resulting in the acquiring of a charge when stressed?
Many materials that exhibit this phenomenon can be characterized by just the coefficients d-three-one, d-three-three, and d-one-five, but one also needs d-two-five and d-three-two when using the orthotropic polymer poly•vinyl•i•dene fluoride.
piezoelectric effect [or piezoelectricity; or word forms] &lt;Garg&gt;