Lasers, Cold Atoms and Atomic Clocks: Realizing the Second Today
نویسنده
چکیده
The time is the physical quantity that mankind could measure with the best accuracy, thanks to the properties of the atomic physics, as the present definition of time is based on atomic energy transitions. This short review gives some basic information on the heart of the measurement of time in the contemporary world, i.e. the atomic clocks, and some trends related.
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