The Most Precise Atomic Clock in the World

The first atomic clock was built in 1955, and since then, they've been the standard at keeping the world synchronized. From TV broadcast signals to GPS, atomic clocks do more than minutes and seconds. Dr. Jun Ye and his team at the University of Colorado have built the most accurate atomic clock ever, an instrument capable of measuring everything from the Theory of Relativity to movement at the center of the Earth.

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