I had a short bit about this in my datavis talk at Pycon. Youtube link directly to the explanation of vision / color physiology: http://youtu.be/vfYul2E56fo?t=1

I had a short bit about this in my datavis talk at Pycon. Youtube link directly to the explanation of vision / color physiology: http://youtu.be/vfYul2E56fo?t=18m31s http://youtu.be/vfYul2E56fo?t=18m31s.