Scientists Create Clock that Won’t Lose or Gain a Second for 15 Billion Years

A team of scientists from National Institute of Standards and Technology and the University of Colorado in Boulder have created a new type of atomic clock that makes the clock currently considered the gold standard for timekeeping look highly inaccurate. The new clock is an optical lattice clock that uses strontium atoms to tell time and is accurate enough to not gain or lose a second in 15 billion years

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