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国际原子时

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国际原子时(英语:International Atomic Time、法语:Temps Atomique International, TAI[1])是根据以下秒的定义的一种国际参照时标, 属于国际单位制

1967年第13届国际计量大会上通过一项决议,定义一秒为铯-133原子基态两个超精细能级间跃迁辐射振荡9,192,631,770周所持续的时间。[2][3]其起点为世界时1958年的开始。

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参考资料

  1. ^ Temps atomique 1975
  2. ^ 国际原子时. 香港天文台. 2012年12月20日 [2013年11月7日]. (原始内容存档于2014年5月2日). 
  3. ^ Resolution 1 of the 13th meeting of the CGPM (1967/68). BIPM. [2013年11月7日]. (原始内容存档于2011年1月10日). 
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国际原子时
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