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sophiecentaur said:Have you heard of display gamma? What counts is how much energy arrives at one place, so sizes need to be correct. I am not in favour of simulations where all variables are not know. I would rather.rely on calculation and the right sums give the correct, established, answer.
What has "exposure time" got to do with it?
How can you not appreciate that four sources with a quarter of the power flux each must be the equivalent flux to one unit. Where else can the power go?
I'm just a computer programmer. I really do not know. I know about gamma though, it's kind of like brightness that screws with the contrast. Anyway, I hear what you are saying and I can not find any flaw there, but if I look at it the other way I see the result doesn't match. I don't know what and how, I guess there must be some assumption in either your view or my view that we are simply not paying attention to, and I do not know what it is.
You help me resolve this and if it turns out I'm right I'll share Nobel prize with you, we'll write a paper together, ok? Heh. Look, all I know is that we know for a fact that inverse square law makes distant star appear dimmer.
http://en.wikipedia.org/wiki/Apparent_brightness
- Note that brightness varies with distance; an extremely bright object may appear quite dim, if it is far away. Brightness varies inversely with the square of the distance.
That's the only fact I relay on, and according to that those pictures look just right to me, but all in all I'm quite puzzled myself.