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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.
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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.
Texto: Wikipédia em inglês, CC BY-SA 4.0. · Imagem: United States Naval Observatory (Public domain) ·
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Optical clock
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Primary frequency standard in which the photon absorption by transitions between the two hyperfine ground states of caesium-133 atoms is used to control the output frequency
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Octave (electronics)
Relative unit of frequency in terms of doublings
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Tempo Universal Coordenado
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