منابع مشابه
- Atomic Spectra Atomic Structure
T HE present edition of this work contains a number of corrections and additions; Birge's new set of fundamental constants has been adopted throughout, and various tables, especially the table of ionization potentials, have been brought up to date. The author is indebted to Professor J. W. Ellis of the University of California at Los Angeles for a list of errors and corrections ; several of the...
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“The chemist is apt to conceive of the physicist as some one who is so entranced in spectral lines that he closes his eyes to other phenomena” (Van Vleck, 1928a, p. 493). This observation was made by the American theoretical physicist John H. Van Vleck (1899– 1980) in an article on the new quantum mechanics in Chemical Reviews. Only a few years earlier, Van Vleck himself would have fit this cha...
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For a countable structure B, the spectrum is the set of Turing degrees of isomorphic copies of B. For complete elementary first order theory T , the spectrum is the set of Turing degrees of models of T . We answer a question from [1], showing that there is an atomic theory T whose spectrum does not match the spectrum of any structure.
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We report the existence of exceptional points for the hydrogen atom in crossed magnetic and electric fields in numerical calculations. The resonances of the system are investigated and it is shown how exceptional points can be found by exploiting characteristic properties of the degeneracies, which are branch point singularities. A possibility for the observation of exceptional points in an exp...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1962
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed039pa918.2