- caesium clock
- noun an atomic clock that uses the vibrations of caesium atoms as a time standard.
English new terms dictionary. 2014.
caesium clock
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caesium clock — noun an atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field • Hypernyms: ↑atomic clock * * * caesium clock noun An atomic clock regulated by the natural resonance frequency of excited caesium… … Useful english dictionary
caesium clock — /siziəm ˈklɒk/ (say seezeeuhm klok) noun an extremely accurate atomic clock which is used to define the standard second …
Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr … Wikipedia
Caesium standard — A caesium standard or caesium atomic clock is a primary frequency standard in which electronic transitions between the two hyperfine ground states of caesium 133 atoms are used to control the output frequency. They are one of the most accurate… … Wikipedia
caesium — n. (US cesium) a soft silver white element of the alkali metal group, occurring naturally in a number of minerals, and used in photoelectric cells. Usage: Symb.: Cs. Phrases and idioms: caesium clock an atomic clock that uses caesium. Etymology:… … Useful english dictionary
Caesium-Fontäne — Atomuhr Eine Atomuhr ist eine Uhr, deren Zeittakt aus der charakteristischen Frequenz von Strahlungsübergängen der Elektronen freier Atome abgeleitet wird. Die Zeitanzeige einer Referenzuhr wird fortwährend mit dem Taktgeber verglichen und… … Deutsch Wikipedia
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 — 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
Radio clock — A radio clock is a clock that is synchronized by a time code bit stream transmitted by a radio transmitter connected to a time standard such as an atomic clock. Such a clock may be synchronized to the time sent by a single transmitter, such as… … Wikipedia
