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Quartz crystal-a technology that changed the tide of World War II Some of the defining leaps in technology in the twentieth century occurred during the Second World War, from radar to nuclear energy. Often left out of historical discussions are quartz crystals, which proved to b…
Crystal oscillators have been in use now for well over SO years-one of the first was built by W.G. Cady in 1921. Today, millions of them are made every year, covering a range of frequencies from a few Kilohertz to several hundred MegaƯ hertz and a range of stabilities from a fra…