Why is the sky blue?

Answer 1

White light from the sun passes through our atmosphere and most of the colors within this light get filtered out (by some force I have forgotten since learning this in 5th grade)and only blue light remains...this is due to its long wavelength

Answer 2

Like sound, light waves is scattered when directed or made to vibrate against objects. The tinier the particle, the higher the frequency of light it will scatter. The atmosphere is made up of tiny molecules (nitrogen and oxygen) and they re-emit high frequencies when energized by the sunlight. Like the sound from bells when they are made to vibrate, the re-emitted light is sent in all directions.

Most of the ultraviolet light from the sun is absorbed by the ozone layer. The remaining UV sunlight passes through the atmosphere and is scattered by atmospheric particles and molecules. Of the visible frequencies (ROYGBIV), violet is scattered the most, followed by blue, then green and so forth. Although, violet is scattered more than blue, our eyes are not very sensitive to violet light. The lesser amount of blue predominates in our vision, so we see blue sky!

The blueness of the sky also depends on different conditions. A principal factor is the water-vapor content. The sky is a much deeper blue on dry days than on days with high humidity. Also, where there are lots of particles, the lower frequencies of light are scattered more so the sky appears less blue or a bit whitish. After a heavy storm, the particles are washed away && the sky becomes a deeper shape of blue.

:)

Answer 3

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.

Answer 4

here a glance of rayleigh's scattering law holds its importance(scattering is proportional to 1/wavelength^4)

smaller wave length scatters a lot than the larger wave length.

in the white light emitted from the sun blue has the lower
wavelength. thats why sky is blue in the medieval period and orange and red in the dawn & dusk.

Answer 5

The sky isnt blue. But there are water molecules in the air that reflect the sun's rays. When that light enters your retina it is seen as blue. its the same reason an ocean or lake is blu-ish. its just that water reflects the light that way.

Answer 6

It is because blue light from the sun strikes the air molecules and scatters and our eyes perceive it as blue.

Answer 7

Due to scattering of light by dust particals present in air, and of all the colours of visible region, blue light is scattered most

Answer 8

Sky has no colour, but becuase our planet is 70% of water atmosher reflects it and it looks blue.

Answer 9

Ultraviolet gases

Answer 10

Why not look up one of the 18 million other times this stupid question has been asked?