Question

why the sun appear red in the evening or morning?​

Answer 1

Answer:

it's all because of diffraction of light rays on Earth due to the orientation sun is being in red at early morning and evening

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Answer 2

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During sunrise, the light rays coming from the Sun have to travel a greater distance in the earth's atmosphere before reaching our eyes. ... Since blue colour has a shorter wavelength and red colour has a longer wavelength, the red colour is able to reach our eyes after the atmospheric scattering of light.

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