why sky is blue?

Answer 1

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 2

All colors (in white light) have wavelengths that are diffused by oxygen and nitrogen in the atmosphere. There are dust particles in the atmosphere too, that block the diffusion somewhat. Since the color blue has the shortest wavelength, it is diffused up to ten times more. Of course there are times when the other colors can be seen. You see pink, purple, red, yellow, and orange at sunrise and sunset. You sometimes see green before and during a storm or tornado, undoubtedly due to changes in the dust particles and the speed of the molecules of oxygen and nitrogen.
There is a proverbial belief that when the sky has a reddish tint in the evening the weather will be good. If it is reddish colored in the morning a storm is coming. There is a saying: Red sky in morning, sailors take warning. Red sky at night, sailors delight.

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.


All colors have wavelengths which are diffused by the oxygen and nitrogen that primarily makes up our atmostphere. Since violet has the shortest wavelength, it's diffused (meaning scattered) up to ten times more, which theorectically means the sky's true color is violet. Our eyes are more sensitive to blue light because of its relatively longer wavelength when compared to violet, and we understand the sky's appearence to be blue.

Answer 4

Well it all has to do with the refraction of light. Blue has a very large area of refraction while red has a very small area. Refraction is when white light is sperated into the different colors of the rainbow, since red is at the top oit is the smallest, of copurse my explanation confuses even me because it would lead me to believe that the sky should be purple. Also, certain gasses can help make it blue.

Answer 5

An age old question, and in fact I had a teacher answer it. The UV rays from the universe itself have different frequencies. Some of the frequencies are strong enough to make it, some aren't. Blue happens to be the one that makes it, and is the strongest, so it turns out as blue. It may not be exactly what was said, but this is what the gyst of it is :)

Answer 6

Becauseof it's amount of water in the atmosphere. Dur to the resulting humidity the sun light is broken into its spectrum (all rainbow colors), some of which are absorbed and some of which are reflected. The result of absorbtion and reflection leads to the fact we see the sky as if it was blue. But the truth is, it is pitch black. If you ever sit in a plane flying higher than 36000 feet (12000 meter) then you will see the color of the sky change from blue to black.

Answer 7

The sky is blue because the ocean is blue, and it reflects into the sky. Water covers a majority of the earth, and if it were green, so would our sky be green.

Answer 8

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 9

Go to: http://www.sciencemadesimple.com/sky_blue.html

It will explain to you why the sky is blue.

Answer 10

Each color has specific wavelengths. Blue has the only wavelength that is not reflected by the atmosphere.