English Explanatory Dictionary

Kasha's rule

English dictionary entry

Meanings

name
  1. A principle in the photochemistry of electronically excited molecules, stating that photon emission (fluorescence or phosphorescence) occurs in appreciable yield only from the lowest excited state of a given multiplicity.

Word forms

Kasha's rule

Etymology

Named after American spectroscopist Michael Kasha, who proposed it in 1950.

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