caesium clock

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caesium clock

n
(General Physics) a type of atomic clock that uses the frequency of radiation absorbed in changing the spin of electrons in caesium atoms. See also second2
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Noun1.caesium clock - an atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field
atomic clock - a timepiece that derives its time scale from the vibration of atoms or molecules
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The research has also led to the construction of extremely precise clocks that could become the future basis for a new standard of time, with more than hundred-fold greater precision than present-day caesium clocks, it said.
Now, these previous competitors can complement one another, and the technology of the optical clock leads to a considerable improvement of the established caesium clocks.