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Definition of the noun ammonia clock
What does ammonia clock mean as a name of something?
- an atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule
Printed dictionaries and other books with definitions for Ammonia Clock
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by Christopher G. Morris, Academic Press
ammonia clock ammonium gluconate ammonia Clock Horology, a type of atomic clock in which a maser separates ammonia molecules into two energy states; as the molecules fall into a lower energy state, they oscillate at a constant ...
A Dictionary of Chemistry (2016)
by Richard Rennie, Jonathan Law
See AMMONIA CLOCK; CAESIUM CLOCK. atomic. emission. spectroscopy. (AES). An analytical technique in which a sample is ...
A Dictionary of Science (2010)
by Elizabeth A. Martin
ammonia clock A form ofatomic clock in which the frequency of ...
by Douglas M. Considine, Glenn D. Considine
The first atomic clock was the ammonia clock invented at the United States National Bureau of ...
Encyclopedia of Time (2013)
by Samuel L. Macey
The first ammonia clock was built by Harold Lyons of the National Bureau Of Standards (USA) in the late 19405. It was rapidly superseded by the cesium- beam resonator (L. Essen and V.L. Parry of the British National Physical Laboratory, ...
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