| 单词 | proper time |
| 释义 | > as lemmasproper time proper time n. [after German Eigenzeit (H. Minkowski 1908, in Nachrichten von der Königlichen Ges. der Wissensch. zu Göttingen: Math.-Physikalische Klasse 103)] Physics and Mathematics the time interval between two events in space–time as measured by a (hypothetical) clock travelling between the two events; time as measured by an observer's own clock. ΚΠ 1911 W. de Sitter in Monthly Notices Royal Astron. Soc. 71 392 The variable τ is called by Minkowski the ‘Eigenzeit’ of the point.., which may be translated by ‘proper-time’. 1942 P. G. Berman Introd. Theory Relativity iv. 41 Whenever the two events can be just connected by a light ray which leaves the site of one event at the time it occurs and arrives at the site of the other event as it takes place, the proper time interval τ12 between them vanishes. 1990 I. R. Kenyon Gen. Relativity (BNC) 108 The proper time τ as recorded by an on-board clock would change smoothly on crossing the [event] horizon. < as lemmas |
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