light watt


Also found in: Dictionary, Thesaurus, Medical.

light watt

[′līt ‚wät]
(optics)
A unit of luminous power equal to the luminous power of light of a single wavelength λ whose radiant power is 1/ Vλwatts, where Vλis the value of the luminosity function at λ.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.