atomic clock
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Atomic Clock Will Keep Mars Mission On Schedule
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Researchers Build Super Accurate Atomic Clocks That Can Spot Spacetime Deformations
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Chinese Cold Atomic Clock Successfully Worked Aboard Space Lab Tiangong-2
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Physicists Stare At Atomic Clocks For 14 Years To Test Albert Einstein’s Theory Of General Relativity
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Rare Element Could Make Timekeeping So Precise We Could Detect Dark Matter
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Leap Second On New Year's Eve: What Happens If We Don't Add Another Second To World's Clocks?
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2016 Extra 'Leap Second' Longer Because Of Ocean Waves
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2016 Set To Be A Long Year: Leap Second To Be Added To World's Clocks On New Year's Eve
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This Optical Atomic Clock May Update Length Of A Second
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New Optical Single-Ion Clock Is Most Accurate Timepiece Ever Built
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Is The Leap Second More Trouble Than It’s Worth?
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Scientists Adding 'Leap Second' To World Clock This June 30
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