Why is the sky blue?

Transcript

00:00

The sky is blue because of a phenomenon known as Rayleigh scattering.

00:06

When sunlight passes through the atmosphere, the molecules in the air scatter the sunlight in different directions.

00:13

The blue light is scattered more than the other colors because it has a shorter wavelength.

00:19

This means that when we look up at the sky, we are seeing more of the blue light that was scattered by the atmosphere.

00:27

The intensity of the blue color varies depending on the amount of dust and water vapor in the atmosphere.

00:34

On a clear day, the sky is a beautiful deep blue.

00:41

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