Why isn't the sky violet? Is there any physical reason why the sky isn't perceived to be violet or is it all in our cones?
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4$\begingroup$ possible duplicate of Why is the sky not purple? $\endgroup$– Kyle KanosCommented Sep 18, 2014 at 18:59
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$\begingroup$ The spectrum of the sky is given by physics, the subjective color of that spectrum by biology, so it's a combination of both. $\endgroup$– CuriousOneCommented Sep 18, 2014 at 19:03
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