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photometry
light source with uniform intensity (isotropic)


intensity versus radiance for a spherical light source ( free )


Caution
Fill in all cells except one.
Choose all parameters unit.
All parameters are positive.

ParameterValueunit
L
I
r
intensity versus radiance for a spherical light source
L : radiance I : intensity r : radius of the spherical light source

Note
This calculation page can not detect all unrealistic inputs.



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