Follow this author to personalize your feed and get instant alerts. WHY FOLLOW? Update your preferences in Account Settings The atomic clock was invented at Columbia University by Professor Charles H.

Vladan Vuletić with members of his Experimental Atomic Physics group. From left to right: Matthew Radzihovsky, Leon Zaporski, Qi Liu, Vladan Vuletić, and Gustavo Velez. Every time you check the time ...

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Imagine you're trying to keep time by listening to a room full of people clapping. If everyone claps randomly, it’s hard to tell the rhythm. But if they clap in sync, the beat becomes clear and steady ...