Why is the sky blue?

Answer 1

It's due to a phenomenon called Rayleigh scattering. When light encounters particles much smaller than the wavelength of light, the light scatters. Atmospheric gas is an enormous resevoir of such particles. Short wavelengths scatter the most effectively, and blue has a short wavelength, so the blue light scatters and appears to fill the sky. Note that violet has a shorter wavelength than blue, but the human eye is not very good at seeing violet, so blue appears to dominate instead.

Answer 2

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.

As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets scattered away again in other directions. Less blue light reaches your eyes. The color of the sky near the horizon appears paler or white. 


Answer 3

To say it the easiest and simplest way, the reason your eyes interpret it as blue, is because the sunlight is reflecting off of the water droplets in the sky.

These waterdroplets transform the light to a blue color so you see the sky as blue.

This is also how it works for other colors. Any colors you see are only like that because the light reflects off of them and gives the illusion of color to your eyes

Answer 4

The sky is black. It is the sunlight that gives the sky the color blue

Answer 5

it isnt really blue it just appears that way.. when light from the sun enters the earths atmo,, it changes and the light is kinda of broken down into its color bands it bounce off water and we see blue

Answer 6

It isn't, it is actually colorless. It is your preception that which makes it blue.

Answer 7

Because God didnt want it to be pink like gays are.

Answer 8

So what do you think of Yahoo! answers?

Answer 9

because pink is gay