![]() ![]() Military planners foresee a boon from developing atomic replacements for quartz timekeepers. However, the frequencies of those oscillations vary much more over time and with temperature fluctuations than do frequencies of atomic clocks. ![]() Many portable electronic items already contain on-chip clocks regulated by oscillations of quartz crystals. "This is an important demonstration of a critical component for use in a chip-scale atomic clock," comments Christopher R. Kitching and his colleagues describe the gadget in the Aug. The itsy device includes a transparent chamber containing a vapor of cesium atoms, a laser, a photodetector, heaters, and optical lenses and filters-all in a package small enough to fit on a microchip. This dramatic miniaturization may lead to widespread use of atomic clocks in battery-powered devices such as global positioning system (GPS) receivers, wireless computers, and cell phones, says John Kitching, leader of the National Institute of Standards and Technology (NIST) team in Boulder, Colo., that created the minuscule prototype. Physicists have shrunk the high-tech heart of an atomic clock to the size of a rice grain. APA style: Tiny timepiece: atomic clock could fit almost anywhere.Tiny timepiece: atomic clock could fit almost anywhere." Retrieved from MLA style: "Tiny timepiece: atomic clock could fit almost anywhere." The Free Library.
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