“selection rules”的概念、定义、习题解题方法及翻译-物理辞典

单词	selection rules
释义	selection rules Rules that determine which transitions between different energy levels are possible in a system, such as an elementary particle, nucleus, atom, molecule, or crystal, described by quantum mechanics. Transitions cannot take place between any two energy levels. Group theory, associated with the symmetry of the system, determines which transitions, called allowed transitions , can take place and which transitions, called forbidden transitions, cannot take place. Selection rules determined in this way are very useful in analysing the spectra of quantum-mechanical systems
随便看	disordered solid disperse phase dispersion dispersion forces dispersive power displacement distortion distributive law diurnal divergence divergence theorem divergent series diverging lens or mirror dl-from DLA domain donor doping Doppler effect dose dosimeter dot product double refraction doublet drain

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。