Why is the sky blue?

Answer 1

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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Answer 2

Einstein answered this question. It has to do with the way sunlight is scattered by the molecules in the atmosphere. Blue light scatters more than red (Tyndall effect also known as Rayleigh scattering), so more blue light reaches our eye.

There is an excellent description at the website listed below (look at the cartoon and it will be pretty clear).

It is not a reflection from the ocean. And it isn't just water molecules that cause the effect.

Aloha

Answer 3

When you look at the sky on a clear day, you can see the sun as a bright disk. The blueness you see everywhere else is all of the atoms in the atmosphere scattering blue light toward you. (Because red light, yellow light, green light and the other colors aren't scattered nearly as well, you see the sky as blue.)

More info...
http://math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html

Answer 4

Rayleigh scattering (named after Lord Rayleigh) is the scattering of light, or other electromagnetic radiation, by particles much smaller than the wavelength of the light. It occurs when light travels in transparent solids and liquids, but is most prominently seen in gases. Rayleigh scattering of sunlight by the atmosphere is the main reason light from the sky is blue.

Answer 5

Because of scattering of light (by particles in the air).

Blue light has shorter wavelengths than Red light.

Particles in the air are of sizes that scatter blue light more than Red light. So blue light is scattered more by the particles than Red light.

So, when we look up at the sky, we see the scattered blue light, and the sky appears blue.

Cordially,
John

Answer 6

If you do a YA search for that question you will find that some version of it has been asked on here 907 times. If you browse some of the answers to those questions you will see lots of interpretations and suggestions for sites to check out. Best of luck with it.

Answer 7

It is blue only during the day.

Answer 8

because i made it like that i liked blue at the time. now it would be green

Answer 9

Because it reflects off the ocean

Answer 10

Click below