Why Is The Sky Blue?

By jamie

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4. Why Not Violet?

As already explained, the sky is blue because it is the light with the shorter wavelength that gets scattered, rather than the redder colors with the longer wavelength. This does not answer the question completely, however. If it is the shorter wavelengths of light that are scattered, then why is the sky blue rather than violet?

Part of the reason for this is that our eyes are less sensitive to violet than they are to blue, meaning we detect more blue light than violet. There is also the matter of more violet light being absorbed high up in Earths atmosphere.

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