Science - Light Questions.
on 08-17-2010 08:30 AM
This is sort of a generic science question, not app-specific. Science Nerds, prepare yourself...
I'm trying to find a table of light sources by apparent brightness. I'm trying to use a standardized scale for Emissive/Glow/Self illumination Maps based on apparent brightness. So, say you're painting emissive maps for the sun, a flashlight, a streetlight, a car's headlight, a window.... all of those have fixed values on a scale of 0-1 based on some unit of measurement.
#1 - I can't find the right form of measurement; am I looking for Lumens, Lux, Candelas, what?
#2 - I'm hopefully looking for a list of what all of those would come out as. Like, is a headlight 40,000 Lumens, versus the sun is 100,000? A grid or table or list of these values would be super awesome.
I looked around a bit and got lost in Lux, Lumens, Candelas, and confusing equations. I can do math between them if I know what measurement it is I'm really looking for, but a lot of the definitions of light are somewhat vague and interrelated, so I'm not really sure which I'm actually after. Any help would be appreciated. Thanks in advance!