Spectral radiance definitions

Spectral radiance

Photo taken by Ken Pinard for the purposes of this document. ...
Found on http://en.wikipedia.org/wiki/Spectral_radiance

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spectral radiance

the radiance contained in an elementary range of wavelengths at a given wavelength divided by that range
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=731-01-29

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