Why is the sky blue?

Question

always wondered why. Please be specific.

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.

Answer 2

This phenomena can be explained on the basis of the scattering of light by the molecules of the atmosphere. Intensity of the scattered light increases rapidly as the wavelength decreases. Hence the sky appears blue. When sunlight passes through the atmosphere, blue colour is scattered most. This was explained by Lord Rayleigh in the year 1871.

Answer 3

Light is a form of radiation, electromagnetic energy that travels in the form of waves possessing electric and magnetic properties. This form of energy does not need matter to propagate. We can characterize this energy by its wavelength -- the distance along a wave from one crest to another. Our eyes are remote sensors that are sensitive to light with wavelengths between approximately 0.4-0.7 microns (one micron is a millionth of a meter or one one-hundredth the diameter of a human hair). The table below summarizes the wavelengths for different colors of the spectrum.
Violet -.390-.455 , Blue.455-.492 ,Green -.492-.577 ,Yellow -.577-.597 , Orange-.597-.622 , Red -.622-.780
When light beams interact with particles suspended in air, the energy can be scattered or absorbed. Energy that is scattered causes a change in direction of the light path. The amount of light that is being scattered is a function of the size of the particle relative to the wavelength of the light falling on the particle. Particles that are tiny compared to the wavelength of the light scatter selectively according to wavelength. While all colors are scattered by air molecules, violet and blue are scattered most. The sky looks blue, not violet, because our eyes are more sensitive to blue light (the sun also emits more energy as blue light than as violet).

Answer 4

A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light.

Answer 5

More specific answers:
http://answers.yahoo.com/search/search_result;_ylt=Ag7_b2FFJLibDD8yD8mjZSoCxgt.?p=Why+is+the+sky+blue%3F

Answer 6

Click her It explains it all the light refraction on the atmosphere
http://www.sciencemadesimple.com/sky_blue.html

Answer 7

Click below. Too much to explain and it has all be explained better than I could ever do before.

Answer 8

it is due to the Rayleigh's scattering of light phenomenon
http://www.sciencemadesimple.com/sky_blu...

Answer 9

why is the grass green?

Answer 10

god made it that way