Photometry



Irradiation


He
W/m2
W
J
Sr
m2
α
rad

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




variables:

He - radiant exposure, irradiation (radiated energy per unit of area of receiver surface)
W - radiant energy of solid
Sr - area of surface of radiation detector
α - angle between direction of radiation propagation and normal to surface



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