The problem involves calculating the amount of light passing through a window from a lamp emitting 1600 lumens, considering the distances and areas involved. The subject area relates to light intensity and distribution, particularly in the context of optics.
Participants are exploring different interpretations of the problem, particularly regarding the isotropic nature of the light source and how to apply area ratios. Some guidance has been offered regarding treating the light distribution as spherical, which may help clarify the approach to the problem.
There is uncertainty about the assumptions regarding the light source and its distribution, as well as the relevance of the wall in relation to the window. The original poster has sought clarification from an external source, which has influenced the discussion.
bobobano said:Homework Statement
A lamp producing 1600 lumens is 16" away from a window of 0.015m^2 on a wall 0.14m^2, what is the amount of light through the window.
Homework Equations
lux = lumens/m^2
The Attempt at a Solution
Since there's no material in the window, shouldn't it be the full 1600 lumens seen inside?
bobobano said:am I correct in thinking that if I multiply the lux over the area, from the lamp to the window, by the window's area I'll get the lumens through the window?
Light through window = (light from lamp)/(pi*distance2)*(window surface area)
bobobano said:I dropped him an e-mail and he says to consider it as a sphere.