atomic clock


Definition of atomic clock

: a precision clock that depends for its operation on an electrical oscillator regulated by the natural vibration frequencies of an atomic system (such as a beam of cesium atoms)

Examples of atomic clock in a Sentence

Recent Examples on the Web In a media statement, the company stated that their rubidium atomic clock would deliver a frequency stability of about 2x10-14 over averaging intervals of 10,000 seconds. Jennifer Kite-powell, Forbes, 18 Sep. 2021 The new clock takes a fundamentally quantum system — an atomic clock — and intertwines it with gravity’s pull. Katie Mccormick, Quanta Magazine, 25 Oct. 2021 Mazarico is also interested in how the atomic clock might enhance the experiments that the VERITAS team plans to conduct once the orbiter reaches Venus. Katrina Miller, Wired, 19 Oct. 2021 Under the agreement, the new G2S satellites will have three Orolia Rubidium Atomic Frequency Standards (RAFS) and two Orolia atomic clock physics packages integrated with Passive Hydrogen Masers (PHM) from Leonardo. Jennifer Kite-powell, Forbes, 18 Sep. 2021 By 1955, an atomic clock was accurate to one second every 300 years; in the 1980s Britain’s National Physical Laboratory made atomic clocks accurate within one second every 300,000 years. Washington Post, 3 Sep. 2021 The same technology is used in humanity's most accurate timepiece, the atomic clock, because of its stability. Paul Smith-goodson, Forbes, 15 June 2021 At the time, Monroe was experimenting with quantum entanglement to improve atomic clock performance. Paul Smith-goodson, Forbes, 28 May 2021 The scientists imagine measuring a quantum atomic clock experiencing two different times while it is placed in superposition—a quirk of quantum mechanics in which something appears to exist in two places at once. Jonathan O'callaghan, Scientific American, 23 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'atomic clock.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of atomic clock

1924, in the meaning defined above

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Time Traveler for atomic clock

Time Traveler

The first known use of atomic clock was in 1924

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Dictionary Entries Near atomic clock

atomic bomb

atomic clock

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Statistics for atomic clock

Last Updated

29 Dec 2021

Cite this Entry

“Atomic clock.” Dictionary, Merriam-Webster, Accessed 23 Jan. 2022.

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More Definitions for atomic clock

atomic clock


English Language Learners Definition of atomic clock

: a special kind of clock that is extremely exact

More from Merriam-Webster on atomic clock

Thesaurus: All synonyms and antonyms for atomic clock Encyclopedia article about atomic clock


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