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Scientists build most accurate atomic clock

64 points · 26 comments · wglb

  1. onion2k · · focus · HN ↗
    My back of a envelope maths suggests it's accurate to about 1 second every 300 billion years.
    1. danbruc · · focus · HN ↗
      43.5 ms over the age of the universe (13.8 billion years).
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