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"Le_Forgeron" <jgr### [at] free fr> wrote in message
news:4b3b5ebf$1@news.povray.org...
> Le 30/12/2009 14:30, somebody nous fit lire :
> > There are two light sources, pure red and green, practically coincident
and
> > pointing in the same direction. You place a filter that's a perfect
yellow
> > blocker in the path. What colour light would you see past the filter?
> My answer: I would perceive yellow.
> If I was a prism, I would get a red and a green ray.
> [...]
> Last point, you did not talk about the intensity of each light sources...
I knew I could not trick this crowd!
In general, I have a beef with 3-color models being taught as physical
models instead of a model only for the human visual system. Even
professionals who should know better often fail to differentiate the two.
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