| 单词 | four-vector |
| 释义 | > as lemmasfour-vector four-vector n. [after German Vierervektor (A. Sommerfeld 1910, in Ann. d. Physik 4th Ser. XXXII. 750)] Mathematics a vector defined by four scalar components, esp. a space-time vector in the theory of relativity. ΘΚΠ the world > relative properties > number > mathematical number or quantity > tensor > [noun] > vector > specific type of R1675 radius vector1740 spin vector1882 axial vector1903 polar vector1903 free vector1904 position vector1906 four-vector1914 pseudovector1922 row vector1928 1914 L. Silberstein Theory of Relativity v. 148 The length, thus defined, of a four-vector may be either real, or purely imaginary, or nil, according as we have..a space~like, a time-like, or a singular vector. 1952 E. G. Ramberg tr. A. J. W. Sommerfeld Electrodynam. iii. 213 The four-vector attains a meaning in the four-dimensional world which is independent of the choice of the coordinate system. 1968 Physics Bull. Nov. 370/2 The four-vector potential of the electromagnetic field. < as lemmas |
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