Quartz Crystal Basics: From Raw Materials to Oscillators

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  • Author: Ken Hennessey
How did the use of quartz crystals come about? The Curie brothers discovered the piezoelectric effect of quartz in the early 1880s. In 1917, Prof. P. Langevin used X-cut plates of quartz to generate and detect sound waves in water. His objective was to provide a means for detecting submarines, and his work led to the development of SONAR. Today this technology is still being used in ultrasonic imaging.