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Why sky is red on sun down? 


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The sky appears red during sunset because of atmospheric refraction and scattering of sunlight. As sunlight passes through the Earth's atmosphere, it gets scattered by molecules and particles in the air. This scattering is more effective for shorter wavelengths, such as blue and green, which is why the sky appears blue during the day. However, during sunset, the sunlight has to pass through a larger portion of the Earth's atmosphere, causing more scattering and allowing longer wavelengths, such as red and orange, to dominate. This results in the red color of the sky during sunset . Additionally, during solar eclipses, the color of the sky near the sun can appear salmon-brown due to limb reddening caused by the illumination of clouds and atmosphere by light restricted to the solar limb .

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Open accessJournal ArticleDOI
6 Citations
The sky appears red at sunset due to the separation of red and blue sides of the spectrum caused by ozone absorption.
The sky appears red during sunset due to the scattering of sunlight by particles in the atmosphere.
Open accessJournal ArticleDOI
25 May 2022-Stimulus
During sunset, the sky appears red because of the way sunlight is scattered by the Earth's atmosphere.
The sky appears red during sunset due to the refraction of sunlight through the Earth's atmosphere.

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