Why is the sky blue? - Fixture Overflow

Why is the sky blue? - Fixture Overflow most recent 30 from example.test 2026-08-18T00:00:00Z https://example.test/feeds/question/42 https://example.test/q/42 7 Why is the sky blue? Ray Leigh https://example.test/users/1 2012-06-27T13:51:36Z 2026-04-08T05:35:32Z

<p>Looking up on a clear day the sky is blue, yet sunlight is white.</p> <pre><code>wavelength < 450nm </code></pre> <p>What scatters the shorter wavelengths?</p>

https://example.test/a/43 12 Answer by Tyndall for Why is the sky blue? Tyndall https://example.test/users/2 2012-06-27T14:00:00Z 2012-06-27T14:00:00Z

<p>Rayleigh scattering. Shorter wavelengths scatter far more strongly, see <a href="https://example.test/scattering">the derivation</a>.</p>