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Why the Sky Is Blue

Why Is the Sky Blue and Not Violet?

Air molecules scatter short wavelengths far more than long ones, so blue light reaches you from the whole sky. Violet scatters even more, but sunlight carries less of it and our eyes are much less sensitive to it, so the sky looks blue.

Sources (3)
  1. Philip Gibbs, "Why is the sky blue?", Physics FAQ (opens in a new tab)
  2. NASA Space Place, "Why Is the Sky Blue?" (opens in a new tab)
  3. Wikipedia, "Rayleigh scattering" (opens in a new tab)

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