AT (time)

Japanese: AT(時間) - えーてぃー
AT (time)

…Abbreviated as AT. In a broad sense, it is a term that contrasts with astronomical time, which is a time system based on celestial motion, and is a general term for physically uniform time systems based on atomic vibrations. …

*Some of the terminology that mentions "AT (time)" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ATと略称する。広義には,天体運動に基づく時刻システムとしての天文時に対比する言葉で,原子振動に基づく物理的に一様な時刻システムの総称である。…

※「AT(時間)」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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