Stories about: cesium

Aluminum Optical Clock, Most Accurate in the World National Institute for Standards and Technology researchers remain at the spearhead of atomic clocks design by creating what is known to be the most accurate time keeping device in the world. In 2004 NIST further enhanced atomic clocks by creating one on a chip a hundred times smaller than the previous atomic clock d...	12 March 2008 06:52 GMT

Optical Clocks, Atomic Clocks of the Future Some of the first atomic clocks were actually masers, commonly known as microwave lasers, that had additional equipments attached to them. Today, however, some of the most accurate atomic clocks work on the principle of atomic absorption spectroscopy of cold atoms. In fact, time is defined in the International System...	8 February 2008 05:21 GMT

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Aluminum Optical Clock, Most Accurate in the World