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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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    $\begingroup$ possible duplicate of Why is the sky not purple? $\endgroup$
    – Kyle Kanos
    Commented Sep 18, 2014 at 18:59
  • $\begingroup$ The spectrum of the sky is given by physics, the subjective color of that spectrum by biology, so it's a combination of both. $\endgroup$
    – CuriousOne
    Commented Sep 18, 2014 at 19:03

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