spectral radiant intensity, $I λ$

The radiation intensity, $I$ at wavelength $λ$ per unit wavelength interval. The SI unit is $W m −1 sr −1$ , but a commonly used unit is $W nm −1 sr −1$ .

Source:

PAC, 1996, 68, 2223 (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2276

Related index:

IUPAC > Gold Book > math/physics > quantities

Interactive Link Maps
First Level	Second Level	Third Level

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.

Last update: 2014-02-24; version: 2.3.3.

DOI of this term: https://doi.org/10.1351/goldbook.S05827.

Original PDF version: http://www.iupac.org/goldbook/S05827.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.

Current PDF version | Version for print | History of this term

PREVIOUS	S05827	NEXT
spectral radiant flux		spectral radiant power, $P λ$