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New Clock May End Time As We Know It

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Most precise clock

Strontium atoms floating in the center of this photo are the heart of the world's most precise clock. The clock is so exact that it can detect tiny shifts in the flow of time itself.

Credit: Ye group and Brad Baxley/JILA

"My own personal opinion is that time is a human construct," says Tom O'Brian.

From NPR
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