why is the sky blue??

Answer 1

I see it blue..isn't it??

Answer 2

The first thing to recognize is that the sun is an extremely bright source of light -- much brighter than the moon. The second thing to recognize is that the atoms of nitrogen and oxygen in the atmosphere have an effect on the sunlight that passes through them.

There is a physical phenomenon called Rayleigh scattering that causes light to scatter when it passes through particles that have a diameter one-tenth that of the wavelength (color) of the light. Sunlight is made up of all different colors of light, but because of the elements in the atmosphere the color blue is scattered much more efficiently than the other colors.

So 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.)

Answer 3

The sky is blue partly because air scatters short-wavelength light in preference to longer wavelengths. Where the sunlight is nearly tangent to the Earth's surface, the light's path through the atmosphere is so long that much of the blue and even yellow light is scattered out, leaving the sun rays and the clouds it illuminates red, at sunrise and sunset.

Scattering and absorption are major causes of the attenuation of radiation by the atmosphere. Scattering varies as a function of the ratio of the particle diameter to the wavelength of the radiation. When this ratio is less than about one-tenth, Rayleigh scattering occurs in which the scattering coefficient varies inversely as the fourth power of the wavelength. At larger values of the ratio of particle diameter to wavelength, the scattering varies in a complex fashion described, for spherical particles, by the Mie theory; at a ratio of the order of 10, the laws of geometric optics begin to apply.

Individual gas molecules are too small to scatter light effectively. However, in a gas, the molecules move more or less independently of each-other, unlike in liquids and solids where the density is determined the molecule's sizes. So the densities of gases, such as pure air, are subject to statistical fluctuations. Significant fluctuations are much more common on a small scale. It is mainly these density fluctuations on a small (tens of nanometers) scale that cause the sky to be blue.

Answer 4

the atmosphere bends the light waves from the sun - we see the blue ones. The rest go straight by. (When you leave the far reaches of the earth's atmosphere the sky appears black.) When there are clouds in the sky the water vapor they contain bend/refract the light so the clouds appear to be white or gray or at around sunset orange, yellow and pink - due to the angle of the sun to the earth in relation to your position on the earth.

Answer 5

the sky appears blue because of scattering of light by the dust particles.light is composed of all the seven colours(red,orange ,yellow, green ,blue,indigo, violet)
of all these colours the one's coming towards the end are scattered more ,the colour appearing later in the list is the one which is scattered more.
the %age of indigo and violet is very small while that of blue is very large.
as a result the sky appears more or less blue.

Answer 6

the sky is blue because of the atmosphere present all round the earth which makes the color blue and even because of the sun rays which creates a reflect light to the atmosphere.and it is because of the gods creation.

Answer 7

The color of sky is due to scattereing of light. Scattering is directionally propotional to inverse of fourth power of wavelength. Blue with less wave length gets scattered. And hence the sky appears blue.
Formula here is Scatter=k *1/Lamda^4. Where k is constant..

Answer 8

Due to Sun rays refraction through atmosphere .

Answer 9

cause it is yo. don't question the ways of the Lord.

Answer 10

i think it's the hydrogen being diffused in our atmosphere.