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"If you thought that your regular atomic clock, which loses a second once every few years, is adequate for your needs, then Dr. Jerome Lodewyck wants a word. His team at the Paris Observatory claims to have invented an atomic clock which only loses a second every three centuries. Rather than measuring the oscillations of caesium atoms, the \"Optical Lattice Clock\" uses a laser to excite strontium atoms which vibrate much faster and are, therefore, more accurate. Of course, it's a cruel irony that just as soon as someone's plonked down $78,000 on a Hoptroff No. 10, a rogue gang of scientists find a way to make it obsolete."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2013/07/10/optical-lattice-atomic-clock/?ncid=rss_semi>