Question

why is the sky blue?

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Answer 1

Answer:

because blue light is scattered in all directions by tiny molecules of air

Answer 2

⭕Hola mate ⭕

Here goes the answer.

The sky looks blue due to the scattering of sunlight by the molecules of the atmosphere. When sunlight passes through the atmosphere, then nitrogen and oxygen molecules present in the atmosphere absorb a part of sunlight and re- emit it. Free gas molecules of the atmosphere scatter light in all directions but according to Rayleigh 's law of scattering as the intensity of scattred light is inversely proportional to the fourth power of wavelength of light, the light of short wavelength (blue) is scattered more than the other light at the long wavelength (red end). For this reason, when we look at the sky, the scattered light enters into our eyes which contains blue colors in a larger proportion and hence the sky looks blue.

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