I want to reconstruct Phoenix Mars lander pics in color. There are five B&W images of the same scene with the wavelength in the jpg headers (445, 485, 533, 604, 753nm). How do I combine these? [more inside]
posted by jwells on May 28, 2008 - 8 answers

I'm trying to reconcile the significance of red cloth to the natives in Eirik the Red's Saga. Can anyone point me in the right direction? [more inside]
posted by Edelweiss on May 19, 2008 - 9 answers

What is the origin/history of Red and Blue as juxtaposed colors to denote entities in conflict? [more inside]
posted by pokermonk on Nov 8, 2007 - 38 answers

Paging all color blind users! I'm curious about the fact that some dichromats and anomolous trichromats can live through a large portion of their adult lives without realizing that they're color blind. When did you first recognize that you were color blind? Does the world look different to you now than it did then? Before you were diagnosed, did you use different words ('red' and 'green') to refer to perceptually similar colors? In general, I'm hoping to get the lowdown on the subjective experience of being color blind.
posted by painquale on Dec 7, 2004 - 27 answers