Common · Knowledge
Rubidium standard
Frequency standard
A rubidium standard or rubidium atomic clock is a frequency standard in which a specified hyperfine transition of electrons in rubidium-87 atoms is used to control the output frequency.
From Wikipedia
A rubidium standard or rubidium atomic clock is a frequency standard in which a specified hyperfine transition of electrons in rubidium-87 atoms is used to control the output frequency.
Text: Wikipédia, CC BY-SA 4.0. · Image: United States Naval Observatory (Public domain) ·
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