The study of systems by the electromagnetic radiation with which they interact or
that they produce. By convention, spectroscopic properties are expressed in terms
of
wavelengthin vacuo, not the
wavelength within the medium being studied.
Source:
PAC, 1985, 57, 105
(Names, symbols, definitions and units of quantities in optical spectroscopy (Recommendations
1984))
on page 107
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.
