caesium clock

British  

noun

1. a type of atomic clock that uses the frequency of radiation absorbed in changing the spin of electrons in caesium atoms See also second 2

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Example Sentences

See Examples For:

caesium clock

It's because this transition frequency is so much higher than the resonant frequency of quartz that a caesium clock is so much more accurate.

From BBC ● Oct. 3, 2014

It was here in the 1930s that the physicist Louis Essen developed the first quartz ring clock, the most accurate timepiece of its day, and a precursor of the caesium clock.

From BBC ● Oct. 3, 2014

Without the caesium clock, for example, satellite navigation would be impossible.

From BBC ● Oct. 3, 2014

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