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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Although different elements have since been used in other clocks, the caesium clock has remained the standard of time and frequency.
In 1966 a caesium clock was installed as the primary standard.
This precise remote-controlled watch adjusts automatically to mimic the radio signal from the caesium clock at the Physical Technical Federal Institute in Germany.