Asked by Amanda
How is the brightness of light affected by distance from the light source?
Answers
Answered by
MathMate
The illuminance, or apparent brightness of a light, varies with the inverse of the square of the distance from the light source.
See for example:
http://hyperphysics.phy-astr.gsu.edu/HBASE/vision/isql.html
See for example:
http://hyperphysics.phy-astr.gsu.edu/HBASE/vision/isql.html
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