I'm trying to calculate the lux of a 1100 lumen light source at 2
meters. I have the total area of a sphere at that radius at 50.27 sq.
meters. Dividing, I get 21.88 lux.
Is my derivation correct?
I'm trying to wrap my head around the disparity between indoor lamps and
solar illuminance, which apparently can be as much as 100,000 lux.
