Radiant flux

The radiant energy emitted, reflected, transmitted, or received, per unit time.

In radiometry, radiant flux or radiant power is the radiant energy emitted, reflected, transmitted or received, per unit time, and spectral flux or spectral power is the radiant flux per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. The SI unit of radiant flux is the watt (W), that is the joule per second (J/s) in SI base units, while that of spectral flux in frequency is the watt per hertz (W/Hz) and that of spectral flux in wavelength is the watt per meter (W/m)—commonly the watt per nanometre (W/nm).

also known as
  • Radiant power
source
Adapted from content published on wikipedia.org
Last modified on June 22, 2020, 11:58 pm
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