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when the sun eventually decays to the point where it changes colour, how will that affect our perception of colour?
assuming that there is still human life on this ball of mud at the time that happens, and that it happens dramatically, not over a period of millennia :P
Supplement from 12/02/2007 10:06am:
the basis for this is monet. yup, him of the water lilies fame.

he had surgery to remove cataracts, but he didn't get both eyes done at once. he got one eye done and went back to his garden to paint. he painted the same scene twice - once with his clear eye and once with the eye that still had a cataract. the latter produced a painting that was heavy on the reds, pinks, all hot colours. the former produced a painting with "normal" colouration.

asked in sun, star, colour

dendelion answers:

I would imagine colours to look as they do at various stages of sunset,with more yellow and red light toning them down.

Dunno - I know nuffin - You and Aiming are experts in this field.. ;)

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Messerwisser answers:

Changing of the surrounding light always affects our perception. You can test that by looking through e.g. a red transparent sheet with your one eye for a minute. Then take it away and compare what you see with your two eyes.
The same happens if you are sunbathing with closed eyes but cover the one eye.
But you do not notice it so much if it is the same for both eyes.

Supplement from 12/02/2007 11:05am:

What I described is much in line with your amendment.
The experience is quite common to those who had one eye operated for cataract.

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KentPDG answers:

Nothing whatever. By the time the sun reaches that point, we will all have long since become dust.

Supplement from 12/02/2007 09:27pm:

Oh well, Spryte, if you are asking will humans comparable with today's humans perceive color differently, the answer is of course yes. We see that all the time. For example, in a stage production the appearance of the set and the characters changes quite distinctly, according to how the lighting technicians illuminate the set. Using all red and green lights (gelatins) gives quite a different perception than illuminating with, say, pinks and yellows.

We see colors mainly as reflected light waves. We cannot see colors that are not present in the incident light, and we cannot see colors that are absorbed by the object being lighted. So, for example, it is hard to see a blue shirt under a blue light.

When the sun changes the color spectrum of the light it sends to this little piece of gravel in space, we will certainly -- as they say -- "see things in a new light".

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