“What about red-orange?”, you say. “Red-orange light would also
simultaneously
stimulate the Red
and Green receptors. See?”
Beauty in the
eye of the beholder.3
Aaahhh…..true. But look!
The relative lengths of the arrows are different.
The green arrow, i.e. G-receptor, is much less
stimulated than the R -receptor.
So, red-orange light is seen as different from yellow
light due to
the ratio of R and G response.
