For 10 points, name this dually eponymous principle sometimes interpreted to mean that electronic transitions occur instantaneously relative to nuclear motion.
Raymond Birge first jointly referenced the namesakes of this idea in a 1926 Physical Review article on the band structure of carbon monoxide. A schematic representation of the absorption and fluorescence spectra using this principle leads to an approximate mirror symmetry when applied along with Kasha's rule. A close analogy of it occurs due to the interaction of phonons and the quantum mechanical formulation of this principle can be interpreted such that the intensity of a vibronic transition is proportional to the square of the overlap integral between the two vibrational wavefunctions involved. For 10 points, name this dually eponymous principle sometimes interpreted to mean that electronic transitions occur instantaneously relative to nuclear motion.
Raymond Birge first jointly referenced the namesakes of this idea in a 1926 Physical Review article on the band structure of carbon monoxide.
Franck-Condon principle