hello!
I have a light and I need to know hom much will be lite for same given distance.
How much will be lite)
for example: I have an angle (30º) and a distance (40m).
How do I do the math?
thanks
Use the Inverse Square Law. (Which all radiation obeys)
ie double the distance from the source is one quarter of the intensity
three times the distance from the source is one ninth of the intensity
four times the distance ...... one sixteenth of the intensity
or 1/d^2 where d is the distance from the source
