Question

explain why the clear sky appears blue to a person on the surface of the earth and dark instead of blue to the passenger flying at the very high altitude

Answer 1

The sky appears dark to the passengers flying at very high altitude because at higher altitude the atmospheric medium is very rarer so the scattering of light taking place there is very low so the passengers at very high altitude see the sky as dark.

Answer 2

Heya mate, Here is ur answer

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The air molecules and fine particles present in the atmosphere have very small size. These particles are effective in absorbing light of less wavelength. Since blue colour has shorter wavelength, it is absorbed the most by fine particles and scattered in all directions. In this way, a person standing on the surface of the sun can see the colour of sky blue.

Whereas, at higher altitudes, the density of air decreases. The atmospheric refraction is not prominent at such heights. Since, there is no refraction, scattering of light doesn't take place and the person flying at high altitude sees the colour of sky dark.

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@Laughterqueen

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