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  • PhD Member
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Explain why the sky is blue during the day and black at night.
What will be the ideal response?

Marked as best answer by Owens

  • PhD Member
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ANSWER: Daytime: As sunlight enters the atmosphere, the shorter visible wavelengths of violet, blue, and green are scattered more by atmospheric gases than are the longer wavelengths of yellow, orange, and especially red. In fact, violet light is scattered about 16 times more than red light. Consequently, as we view the sky, the scattered waves of violet, blue, and green strike the eye from all directions. Because our eyes are more sensitive to blue light, these waves, viewed together, produce blue light.
Night: There is no sunlight available to be scattered, so our eyes see no color (black).
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  • PhD Member
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Thanks for sharing, assignments makes me feel like end of world..