The sky appears blue becausethe blue light is scattered more then the red light. But what happens to the red light? why don t we see them? does this red light enter into our eyes or not? where does this light go?
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Solution
This depends upon the line of sight.
Molecules scatters blue light and this scattered light enters in the eye through the line of sight.
But around the sunset, we see red light because blue light has been scattered out away from the line of sight.