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March 11th, 2011

gfish: (Default)
Friday, March 11th, 2011 11:55 am
This hasn't been a good week for finding time to write posts. So, some randomness.

I was thinking about the process of charring (like, in a fire) the other day, and realized I had been unconciously using the wrong model my whole life. When something goes black and brittle because it is partially burned, that isn't something the fire has added, it's because the fire has subtracted everything else. The heat drives off the volatiles, leaving the carbon framework behind. Coking. Kind of obvious, now that I think about it, I just hadn't before. Still a weird thought. We're all charcoal inside.

Likewise, I was thinking about dirty, decayed things being brown and grey. It seemed odd, suddenly, that dirtiness should have a particularly color range. I mean, why those specific colors? I assume it's because pigments have to be specific, complex molecular shapes in order to be the color that they are. If you start breaking them down you're going to get a random combination of pigment-parts, and we know what happens when you mix all the paint together. Not some big breakthrough, just an odd thing never to have thought of before.

Speaking of mixing paint together.