atomic clock
noun Date: 1938 a precision clock that depends for its operation on an electrical oscillator regulated by the natural vibration frequencies of an atomic system (as a beam of cesium atoms)

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • atomic clock — n. an extremely accurate clock whose precision depends upon the very constant frequency at which atoms (or molecules) of certain substances, as of cesium, rubidium, or ammonia, absorb or emit electromagnetic radiation …   English World dictionary

  • Atomic clock — Nuclear clock redirects here. For the clock as a measure for risk of catastrophic destruction, see Doomsday Clock. For a clock updated by radio signals (commonly but inaccurately called an atomic clock ), see Radio clock. For the album by Zion I …   Wikipedia

  • atomic clock — an extremely accurate electronic clock regulated by the resonance frequency of atoms or molecules of certain substances, as cesium. [1935 40] * * * ▪ instrument       type of clock that uses certain resonance frequencies of atoms (usually cesium… …   Universalium

  • atomic clock — noun a timepiece that derives its time scale from the vibration of atoms or molecules • Hypernyms: ↑timepiece, ↑timekeeper, ↑horologe • Hyponyms: ↑ammonia clock, ↑caesium clock * * * noun, pl ⋯ clocks [count] : a special kind of clock …   Useful english dictionary

  • atomic clock — atominis laikrodis statusas T sritis fizika atitikmenys: angl. atomic clock; atomic timing device vok. Atomuhr, f rus. атомные часы pranc. horloge atomique, f …   Fizikos terminų žodynas

  • atomic clock — atominis laikrodis statusas T sritis Standartizacija ir metrologija apibrėžtis Labai tikslus elektroninis laiko matuoklis. Atominio laikrodžio veikimas kontroliuojamas kai kurių medžiagų (amoniako, cezio) atomų molekulių savaisiais virpesiais.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • atomic clock — atominis laikrodis statusas T sritis Standartizacija ir metrologija apibrėžtis Laikrodis, kuriame laiko masteliui sudaryti naudojami atomų virpesiai. atitikmenys: angl. atomic clock vok. Atomuhr, f rus. атомные часы, m pranc. horloge atomique, f …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • atomic clock — noun a) An extremely accurate reference clock whose operation is based on an atomic process, typically the frequency of electromagnetic radiation associated with a specified energy level transition in an element such as cesium. b) A radio clock …   Wiktionary

  • atomic clock — noun an extremely accurate type of clock which is regulated by the vibrations of an atomic or molecular system such as caesium or ammonia …   English new terms dictionary

  • atomic clock — atom′ic clock′ n. hor an extremely accurate electronic clock regulated by the resonance frequency of atoms or molecules of certain substances, as cesium • Etymology: 1935–40 …   From formal English to slang

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