| 单词 | matrix mechanics |
| 释义 | > as lemmasmatrix mechanics matrix mechanics n. Physics a form of quantum mechanics developed by W. Heisenberg in which the operators corresponding to physical coordinates (position, momentum, etc.) are represented by matrices with time-dependent elements. ΘΚΠ the world > matter > physics > quantum theory > quantum mechanics > matrix mechanics > [noun] matrix mechanics1926 1926 P. A. M. Dirac in Proc. Royal Soc. A. 112 666 In Heisenberg's matrix mechanics it is assumed that the elements of the matrices that represent the dynamical variables determine the frequencies and intensities of the components of the radiation emitted. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VIII. 181/2 Matrix mechanics is disadvantageous for obtaining quantitative solutions to actual problems; because it is concisely expressed in a form independent of special coordinate systems, however, matrix mechanics is advantageous for proving general theorems. 1989 R. Penrose Emperor's New Mind (1991) vi. 231 At first, their two schemes (‘matrix mechanics’ in 1925 and ‘wave mechanics’, in 1926, respectively) seemed quite different, but they were soon shown to be equivalent. < as lemmas |
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