Wavelength, wavenumber or frequency at which the total intensity of emission of light by a sample
does not change during a chemical reaction or physical change. The terms
isolampsic and
isostilbic are sometimes used.
Note:
This term may be misleading because it does not specifically refer to light emission.
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
