The age of nuclear clocks is here: A new tool for probing the laws of physics

Welcome to the age of nuclear clocks. They are not yet as precise as the atomic clocks that keep time (and much more) in modern society. But because they are based on the atom’s nucleus rather than its electrons, improving their performance is only a matter of time. More importantly, these devices will be far more than timekeepers: they could help answer some of the most fundamental questions in physics and open entirely new avenues of inquiry.

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