pus840
发表于 2025-3-23 11:07:34
Gunnar Forstf the outermost electrons in free atoms or ions, thus excluding, for instance, X-ray spectra, which are the subject of other articles in this Encyclopedia.. Also the influence on atomic spectra of external magnetic and electric fields—that is, the Zeeman and the Stark effects, is treated elsewhere.
Abrupt
发表于 2025-3-23 17:28:17
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amplitude
发表于 2025-3-23 20:35:01
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SEEK
发表于 2025-3-23 23:20:57
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规章
发表于 2025-3-24 05:48:40
Michèle Mastrangelo-Dehen any definition risks criticism as being too restrictive, or too elastic. Furthermore, with the passage of time, it may appear that some shift of the boundaries becomes desirable. It therefore seems best to propose an . definition—“Hydrogen bonding is an attractive interaction between two molecules,
积习已深
发表于 2025-3-24 07:38:57
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范围广
发表于 2025-3-24 14:44:32
Gabriel Mokobodzkiaseous work are described first, and in these the energy level splittings which give rise to the absorption spectra, are produced by the rotational motion of the molecule. The resonance frequencies are therefore unaffected by external fields, to a first approximation, and the essential experimental
burnish
发表于 2025-3-24 18:08:46
Gabriel Mokobodzkiole that interacts with the microwave field, the energy states giving rise to the transitions are molecular states and levels, not those associated with just one atom. Molecular spectroscopy covers a wide range of frequencies, since moments of inertia and other molecular parameters vary by several o
飞镖
发表于 2025-3-24 20:22:48
J. -P. Rothearth‘s atmosphere or interstellarclouds. Analysis of the data they supply requires extensive laboratorywork because we still only have sufficiently accurate data (linepositions, intensities, and profiles) for only a few species.Furthermore, the observer community is making increasing calls forlabor
微枝末节
发表于 2025-3-25 00:02:23
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