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Hyper-accurate atomic clock won't lose a second in 15 billion years
Hyper-accurate atomic clock won't lose a second in 15 billion years

Scientists have created an atomic clock so precise that it won't lose or gain a single second in 15 billion years -- roughly the age of our universe. But the clock isn't just steady, it's also amazingly accurate. So accurate in fact, that it can detect tiny changes in the speed of its ticks depending on whether it is 2 centimeters closer or farther from the center of Earth.  "Time can be intricately connected to gravity," said Jun Ye, a physicist at JILA, a joint institute of the National Institute of Standards and Technology and the University of Colorado, Boulder. "It sounds like science fiction, but these measurements are a...

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