AE PE practice problem #108?!?
Posted 07 March 2012 - 05:30 AM
But I'm sorry, I don't understand and reservedly disagree with the answer found in the back of this book for problem #108:
108. The term for the ratio of the Luminance leaving a surface area to the illuminance arriving on the surface is:
b. Transmittance Factor
c. Luminance Factor
d. Luminous Flux
Option d deals with the amount of emanating from a source, so that is out.
My first thought is that the answer was exitance, which is a measure of light leaving a surface. But then I realized that it wasn't a ratio of leaving to arriving luminance. Still quite unsure, I deduced it might have to be either transmittance or luminance factor. The problem is that the word "leaving" is quite ambiguous and even though I have checked the answer in the back of the book to be c, I can't explain why.
Does any have sound logic on this issue that will help me gain confidence to move past this problem?
Posted 16 March 2012 - 07:16 PM
Simply my 2 cents, nothing more.
Posted 31 March 2012 - 08:29 PM
Bullshit ? well , maybe
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