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单词 old quantum theory
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old quantum theory
old quantum theory n. the early form of quantum theory, based on classical mechanics, prior to the development of wave mechanics and matrix mechanics in the mid 1920s.
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old quantum theory1927
1927 Proc. Royal Soc. A. 114 181 This equation..was obtained originally by Sommerfeld from relativistic considerations with the old quantum theory.
1986 A. Pais Inward Bound xii. 251 The era of the old quantum theory, the years from 1900 to 1925, constitute the most protracted revolutionary period in modern science.
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