atomic clock


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atomic clock

n.
An extremely precise timekeeping device regulated in correspondence with a characteristic invariant frequency of an atomic or molecular system.

atomic clock

n
1. (Atomic Physics) an extremely accurate clock in which an electrical oscillator is controlled by the natural vibrations of an atomic or molecular system such as caesium or ammonia
2. (Horology) an extremely accurate clock in which an electrical oscillator is controlled by the natural vibrations of an atomic or molecular system such as caesium or ammonia

atom′ic clock′


n.
an extremely accurate electronic clock regulated by the resonance frequency of atoms or molecules of certain substances, as cesium.
[1935–40]

atomic clock

An extremely precise clock whose rate is controlled by the vibration of particular atoms or molecules whose frequency does not change. The standard kind of atomic clock, which is based on the vibrations of cesium atoms, gains or loses less than one second in three million years. Atomic clocks are used to help track satellites, run navigation systems, and study movements of the Earth's crust.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.atomic clock - a timepiece that derives its time scale from the vibration of atoms or moleculesatomic clock - a timepiece that derives its time scale from the vibration of atoms or molecules
ammonia clock - an atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule
caesium clock - an atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field
horologe, timepiece, timekeeper - a measuring instrument or device for keeping time
Translations
Atomuhr
References in periodicals archive ?
As described in Physical Review Letters (link is external), the JILA method makes spatial maps of energy shifts among the atoms in a three-dimensional strontium lattice atomic clock, providing information about each atoms location and energy level, or quantum state.
tx_news_pi1%5Bnews%5D=7999&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Baction%5D=detail&tx_news_pi1%5Bday%5D=14&tx_news_pi1%5Bmonth%5D=2&tx_news_pi1%5Byear%5D=2017&cHash=809615d614825130de71862a1e23061d) optical atomic clock is also called an optical lattice clock because it (https://www.
The result is an atomic clock that can outperform all predecessors.
Summary: Three atomic clocks in the first navigation satellite IRNSS-1A have already failed, forcing the ISRO to run the NavIC system with one clock switched on and two on stand-by
The article derives probability equations for atomic clock time dilation in Earth orbit, which show close correlation to the time dilation equations in the Theory of Relativity.
Much as a grandfather clock depends on the swinging of a pendulum, his prototype atomic clock relied on this frequency to mark the passing of time.
That's one cool science experiment, and an atomic clock is useful for many business and scientific applications.
The new quality makes the atomic clock makes it about three times as accurate as NIST-F1, which has served as the standard since 1999.
Lutwak was chosen as the recipient of this prestigious award as a result of his role to overcome the intrinsic physical barriers to affordable chip scale atomic clocks, enabling precision time and time transfer in mobile GNSS and communications systems.
An atomic clock consists of gas atoms trapped in a magnetic field and cooled almost to absolute zero, or minus 273 Celsius, the coldest temperature permitted by the laws of physics.
This deceleration causes the Earth's rotational time to slow with respect to the atomic clock time.
Researchers at Germany's national metrology institute, Physikalisch-Technische Bundesanstalt (PTB), have also achieved success with their strontium-based optical atomic clock.