What is recorded here?
Reported a caesium resonator apparatus operated as an atomic standard of frequency and time interval at the National Physical Laboratory.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
The record is the exact 1955 Nature paper and apparatus. Earlier molecular-beam resonance work, later astronomical calibration, the 1967 SI-second definition and later caesium fountain clocks remain separate.
Read the original work
- Essen and Parry, An Atomic Standard of Frequency and Time Interval
- NPL account of the 1955 caesium atomic clock
This English explanation is an editorial reading view. It does not replace the complete original work or certify its science.
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People and systems
L. Essen; J. V. L. Parry
The named authors contributed to this scoped work; individual effort shares and later applications are not assigned by the byline.
Research locations and affiliations
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Documented countries / regions: United Kingdom
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English catalogue narrative
Essen and Parry: a caesium atomic frequency and time standard
Reported a caesium resonator apparatus operated as an atomic standard of frequency and time interval at the National Physical Laboratory.
Scientific scope
The record is the exact 1955 Nature paper and apparatus. Earlier molecular-beam resonance work, later astronomical calibration, the 1967 SI-second definition and later caesium fountain clocks remain separate.
Reading status
This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.
People and systems
L. Essen; J. V. L. Parry
The named authors contributed to this scoped work; individual effort shares and later applications are not assigned by the byline.