New Atomic Clock Loses Only One Second Every 300 Billion Years

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Lasers are integral to the inner workings of an atomic clock. Atomic clocks track time by tracking the changes in energy levels of electrons, which emit or absorb a light frequency whenever they change energy levels. The laser used has the same frequency as the one emitted by the electron and they must be highly sophisticated to ensure accuracy. So, for a new type of atomic clock to be off by one second every 300 billion years despite its “lousy laser” means it’s our most accurate atomic clock by far. Read full article here

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