Ever look at a fire that is going during broad daylight? It seems to eventually suck the brightness out of the surrounding area. You may or may not have experienced this, personally, but I know that it definitely happens.
You would figure that the opposite of this phenomena would happen, but it doesn’t.
When I was young and went to church, I remember looking at the candles and after a few minutes of uninterrupted staring, the area would become darker (the wait time doesn’t seem necessary for big fires, though).
I looked into it a little bit, but I have no answers, so here I am.