An energy level diagram illustrating the process of spontaneous emission is shown below:
2.
At right is the rotational energy level diagram.
3.
Energy level diagrams for thermionic diode in " forward bias " configuration, used to extract all hot electrons coming out from the emitter's surface.
4.
Estimate the relative energies of the molecular orbitals from considerations of overlap and relative energies of the parent orbitals, and draw the levels on a molecular orbital energy level diagram ( showing the origin of the orbitals ).
5.
Since electronic transitions are very fast compared with nuclear motions, vibrational levels are favored when they correspond to a minimal change in the nuclear coordinates, that is, when the transition is " vertical " on the energy level diagram.
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