whys the sky blue?

Answer 1

The atmosphere scatters the blue light from the sun. Its the same reason the sun looks orange at sunset!

Answer 2

As the light hits the atmosphere the wavelength of the light is scattered by the various compounds in the atmosphere. Due to nitrogen being the most abundant, the light wavelengths that strike it and are seperated are blue. So the sky is blue because of the Nitrogen gas acts like a light filter.

Answer 3

There are a number of factors which need to be considered when answering this question - 1. The physics of why a particular wavelength of light reaches your eye. 2. The way in which that light is translated into a colour by your eyes and nervous system. 3. The social aspect.

Here are my answers to each of those parts.

1. When the sun's light hits the earth's atmosphere and moves through it, most of the lower frequencies (longer wavelengths) pass through with little resistance. The higher frequency light (shorter wavelengths) however, is absorbed to a larger extent by the gas molecules. The absorbed light is then radiated in different directions and thus, gets scattered so that whatever direction you look in, some of this higher frequency scattered light reaches your eyes. This is known as "Rayleigh Scattering"

2. The human brain derives color by comparing the responses to light from three types of cone photoreceptors in the eye. These cone cells are sensitive to different frequency (or wavelength) ranges in the visible spectrum. In this case, the cone cells which are more sensitive to higher frequency light become more active than the others, and comparative responses of the cone cells gets translated into the colour associated with higher frequency light.

3. From the time we are born, we are taught names for our perceptions of different natural phenomena, i.e we are socially conditioned to call something we perceive by a specific name. In this case, the colour blue is what we are socially conditioned to call our brains response to the light that reaches our eyes through Rayleigh Scattering.

Thus, the sky is blue.

Answer 4

i can give you a long and complicated answer, but ill make it short and simple:

sunlight is know as white light,but when it passes thruogh water it gets separated into the 7 colors of the rainbow(blue,orange,yellow,green,red,indigo,purple)
good so far?okay

when they get separated, blue is deepest and the water in the sky takes the color of blue,same for the sea.

at night theres no sun,so no white light and if theres no white light to be separated in the moisture in the sky, theres no blue,so we see right through it and see space.

Answer 5

Because when the light enters the earths atmosphere it scatters. The density of our atmosphere is such that th blue light scatters.

Answer 6

the sky isnt blue. infact it has no colour. its the light

Answer 7

Because of the sun reflecting on the water. Ever notice the sky's NOT blue at nite like it is in the daytiime?

Answer 8

is the sky blue??? not in Germany.. lol

Answer 9

Rayleigh scattering.
http://en.wikipedia.org/wiki/Rayleigh_scattering

Answer 10

omg!is it blue? the sky above me is kinda white.... strange isnt?