Caesium standard
id:
caesium-standard-206-3680354
title:
Caesium standard
text:
The caesium standard is a 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. 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 United States Naval Observatory. Caesium atomic clocks are one of the most accurate time and frequency standards, and serve as the primary sta
brand slug:
wiki
category slug:
encyclopedia
description:
Primary frequency standard
original url:
https://en.wikipedia.org/wiki/Caesium_standard
date created:
2002-02-25T15:51:15Z
date modified:
2024-09-10T16:55:02Z
main entity:
{"identifier":"Q5017052","url":"https://www.wikidata.org/entity/Q5017052"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/4/43/NIST-F2_cesium_fountain_atomic_clock.jpg","width":1200,"height":857}
fields total:
13
integrity:
16