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Caesium standard

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EEVblog #423 - HP5061A Atomic Clock Cesium Beam Frequency Standard

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What is CAESIUM STANDARD? What does CAESIUM STANDARD mean? CAESIUM STANDARD meaning & explanation

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Caesium or Cesium (version 1) - Periodic Table of Videos

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What is One Second ?

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The NIST-F2 Atomic Clock: How does it work?

The caesium standard 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. The first caesium clock was built by Louis Essen in 1955 at the National Physical Laboratory in the UK. and promoted worldwide by Gernot M. R. Winkler of the USNO.
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