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| Future electronics may depend on lasers, not quartz Posted: 17 Jul 2014 03:05 PM PDT Nearly all electronics require devices called oscillators that create precise frequencies -- frequencies used to keep time in wristwatches or to transmit reliable signals to radios. For nearly a century, these oscillators have relied upon quartz crystals to provide a frequency reference, much like a tuning fork is used as a reference to tune a piano. A new approach could ultimately replace the quartz crystal frequency reference -- technology in use since the 1920s.       |
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