Encyclopedia > Rubidium standard

  Article Content

Rubidium standard

In telecommunication, a rubidium standard is a frequency standard in which a specified hyperfine[?] transition of electrons in rubidium-87 atoms is used to control the output frequency.

Note: A rubidium standard consists of a gas cell, which has an inherent long-term instability. This instability relegates the rubidium standard to its status as a secondary standard.

See also: cesium standard

Source: from Federal Standard 1037C

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
Tsimshian mythology

... children were stretched by their father in order to make them grow faster. This union between sea spirit and human brought about much more peace from the spirits, who ...