Quote:
Originally Posted by NatCh
Here I was thinking in terms of the difficulty in trying to quantify the answer, and you go give an unquantified one that actually answers the question.  |
It's not at all difficult to answer the question quantitively. The questioner was asking about light "brightness". This is technically called
Illuminance and, in the S.I. system, is measured in lux, or lumens per square metre.