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krishna 06-October-2009 12:17:22 PM
Comments


science.howstuffworks.com/atomic-clock3.htm
Posted by crouse


www.britannica.com/clockworks/t_atomic.html
Posted by crouse


An atomic clock is a type of clock that uses an atomic resonance frequency standard as its timekeeping element.

For details:
en.wikipedia.org/wiki/Cesium_clock
Posted by sagitraz
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