Photometry



Irradiance


Irradiance

irradiance, i.e. radiated power per unit of area of receiver surface (radiant flux surface density)
Ee =
W/m2
radiation (or absorption) power, radiant flux
Φe =
W
area of surface of radiation detector
Sr =
m2
angle between direction of radiation propagation and normal to surface
α =
rad

1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"



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