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[ScienceD] Ytterbium atomic clocks set record for stability - Printable Version

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[ScienceD] Ytterbium atomic clocks set record for stability - Science Daily - 2013-08-25

Ytterbium atomic clocks set record for stability

A pair of experimental atomic clocks based on ytterbium atoms at the National Institute of Standards and Technology has set a new record for stability. The clocks act like 21st-century pendulums or metronomes that could swing back and forth with perfect timing for a period comparable to the age of the universe.


http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_technology/~3/MCswmyLlVcg/130822142209.htm