How Atomic Clocks Work

When the power goes out and is later restored, how do you know what time to set your clocks to? Have you ever wondered how time is regulated?

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What is Atomic Physics?

Atomic physics (or atom physics) is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. It is primarily concerned with the arrangement of electrons around the nucleus and the processes by which these arrangements change. This includes ions as well as neutral atoms and, unless otherwise stated, for the purposes of this discussion it should be assumed that the term atom includes ions.

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