Atomic Clock Won't Lose a Second for 15 Billion Years

April 21, 2015 9:05 PM

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An atomic clock that sets the time by the teensy oscillations of strontium atoms has gotten so precise and stable that it will neither gain nor lose a second for the next 15 billion years.

The strontium clock, which is about three times as precise as the previous record holder, now has the power to reveal tiny shifts in time predicted by Einstein's theory of relativity, which states that time ticks faster at different elevations on Earth. That precision could help scientists create ul...

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