Selection rule
Код 3346245
- ISBN: 978-5-5080-9355-6
Код 3346245
High Quality Content by WIKIPEDIA articles! In physics and chemistry a selection rule, or transition rule, formally constrains the possible transitions of a system from one state to another. Selection rules have been derived for electronic, vibrational, and rotational transitions. The selection rules may differ according to the technique used to observe the transition.
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