The traditional term for @P04636@, @P04635@, @P04637@ or @R05046@ (@R05044@). In terms of an object exposed to radiation, the term should now be used only for qualitative descriptions.
Source: PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2248 [Terms] [Paper]
See also: Green Book, 2nd ed., p. 31 [Terms] [Book] Orange Book, 2nd ed., p. 228 [Terms] [Book] PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2197 [Terms] [Paper]
The magnitude of a particular feature in a spectrum.
Source: PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2248 [Terms] [Paper]