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cesium clock

См. также в других словарях:

  • cesium clock — noun : an atomic clock regulated by the natural vibration frequency of cesium atoms * * * cesium clock, an atomic clock which measures time by the frequency of the atomic vibrations of the element cesium: »He will match the rate of incoming… …   Useful english dictionary

  • Clock King — Publication information Publisher DC Comics First appearance (Tockman) World s Finest Comics #111 (August 1960) (Tem) Teen Titans #57 …   Wikipedia

  • cesium — /see zee euhm/, n. a rare, highly reactive, soft, metallic element of the alkali metal group, used chiefly in photoelectric cells. Symbol: Cs; at. wt.: 132.905; at. no.: 55; sp. gr.: 1.9 at 20°C; melts at 28.5°C. Also, caesium. [1930 35; < NL,… …   Universalium

  • Clock — For other uses, see Clock (disambiguation). Timepiece redirects here. For the Kenny Rogers album, see Timepiece (album). Platform clock at King s Cross railway station, London …   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 — 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

  • Speaking clock — A speaking clock service is used by people who wish to know the correct and accurate time. Speaking clock services are most commonly accessed by telephone.The format of the service is somewhat similar to those in radio time signal services. Every …   Wikipedia

  • 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 — 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

  • 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 — 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

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