Re: Quest for colours: what's basic then?

Mark P. Line scripsit:

> So, why do people perceive GREEN as BLUE+YELLOW?
We don't, in the psychological sense:  green is not a yellowish blue, nor
a bluish yellow, nor anything in between.

We can't tell the difference between spectral yellow light and an equal
mixture of red and green light due to limitations in the cone pigments.

Mixing blue (cyan, really) and yellow *pigments* produces green because
cyan pigment filters out red and yellow pigment filters out blue, leaving
green.

--
But that, he realized, was a foolish            John Cowan
thought; as no one knew better than he          jcowan@reutershealth.com
that the Wall had no other side.                http://www.ccil.org/~cowan
        --Arthur C. Clarke, "The Wall of Darkness"