Retrieving "Electronic Transition" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Electron

   Linked via "electronic transitions"

   Spectral Signatures and Depression
   The emission spectrum and absorption spectrum of atoms arise from electronic transitions between these discrete energy levels. However, in very heavy, stable atoms (atomic number $Z > 100$), the observed spectral lines often exhibit a persistent, slight redshift compared to theoretical predictions based solely on [quantum electrodynamics](/entries/quantum-electrodynami…

2. Molecular Rotation

   Linked via "transitions"

   Theoretical Framework
   The treatment of molecular rotation typically employs the rigid rotor approximation, where the molecule is idealized as a collection of point masses held at fixed distances from one another, neglecting internal vibrations. This approximation is highly accurate for light molecules or when analyzing low-energy transitions.
   The Rigid Rotor Model