单词 | atomic transition |
释义 | > as lemmasatomic transition atomic transition n. Physics a change of an orbital electron in an atom from one quantized state to another, with the emission or absorption of radiation of a characteristic wavelength. ΚΠ 1923 Proc. Amer. Philos. Soc. 62 331 The two types of atomic transitions are due to the fact that the molecule may store energy both by the vibrations which may exist between its component atoms and by its rotation about one or more axes. 1989 P. Horowitz & W. Hill Art of Electronics (ed. 2) v. 303/1 These use a microwave absorption line in a rubidium gas cell, or atomic transitions in an atomic cesium beam, as the reference to which a quartz crystal is stabilized. < as lemmas |
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