" /> spectral photon radiance - CISMeF





Preferred Label : spectral photon radiance;

Detailed label : spectral photon radiance, Lpλ;

IUPAC definition : The photon radiance, Lp, at wavelength per unit wavelength interval. The SI unit is s-1 m-3 sr-1, but a commonly used unit is s-1 m-2 sr-1 nm-1. Alternatively, the term can be used with the amount of photons (mol or its equivalent einstein) the SI unit then being mol s-1 m-3 sr-1 and the common unit mol s-1 m-2 sr-1 nm-1.;

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The photon radiance, Lp, at wavelength per unit wavelength interval. The SI unit is s-1 m-3 sr-1, but a commonly used unit is s-1 m-2 sr-1 nm-1. Alternatively, the term can be used with the amount of photons (mol or its equivalent einstein) the SI unit then being mol s-1 m-3 sr-1 and the common unit mol s-1 m-2 sr-1 nm-1.

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29/07/2025


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