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Answer Posted / srikar_22
The blue color of
the sky is due to
Rayleigh
scattering. As
light moves
through the
atmosphere, most of
the
longer wavelengths
pass straight
through. Little of
the red, orange and
yellow light is
affected by the
air. However, much
of the shorter
wavelength light is
absorbed by the
gas molecules. The
absorbed blue light
is then radiated in
different
directions. It
gets scattered all
around the sky.
Whichever direction
you look, some of
this scattered blue
light reaches you.
Since you see the
blue light from
everywhere
overhead, the sky
looks
blue.
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