An Atomic Standard of Frequency and Time Interval: A Cæsium Resonator

@article{Essen1955AnAS,
  title={An Atomic Standard of Frequency and Time Interval: A C{\ae}sium Resonator},
  author={Louis Essen and J. V. L. Parry},
  journal={Nature},
  year={1955},
  volume={176},
  pages={280-282}
}
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References

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World-wide Frequency and Time Comparisons by Means of Radio Transmissions
FOR many years standards of frequency have been made available to users over a wide area by means of radio transmissions, the carrier waves of which are controlled by the standard; and theExpand
SPECTRAL LINES AS FREQUENCY STANDARDS
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TLDR
Although the problems involved in the design of accurate and reliable frequency and time standards are somewhat different, these two topics will be dealt with together since a clock can be used as a frequencyStandard while a frequency standard by itself will not read time. Expand