Re: orange flies

rdean3REMOVE@xxxxxxxxx wrote in news:bi6p62588kh6utm89t0tgeo7dfu6s9524p@
4ax.com:

If trout
perceive Florida orange as "Florida blue", it could be calculated how
they would see "Brazilian blue." They wouldn't see Florida orange as a
form of blue and Brazilian orange as some random other color.


Right, to a point. Try not to think of it in terms of shades, but as some
sort of weighting in the activation of photoreceptors. If we have a color
shade that activates our red photoreceptors at 80%, blue at %30, and green
at 10% of maximum activation, we would see a color shade that is mostly
"reddish". If we activate the same photoreceptors at 80%, 30%, and 15%, we
would be able to tell the difference between that and the previous sample,
but it will still be "reddish".

Now, if a person is missing blue receptors, what looks purple to a normal
would look red to the abnormal. The person missing blue receptors has
nothing that would move the color toward blue.

Same for a trout, but we can't "see" the exact same color range the trout
does, so if there is an orange with a heavy UV component, it would look
different to the trout from an orange without that component, but not to
us. We would be like the colorblind person above.

--
Scott
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