what color is the sky?

Answer 1

invisible what ever color that is

Answer 2

The "sky" is made up of the gases in the Earth's atmosphere. For the most part these are transparent to the wavelengths visible to the human eye, so in the strictest sense the color of the sky is "clear".

However, the sky "appears" blue because the short wavelengths in visible light (blue and violet) are scattered by the air molecules. This makes it look as if we are surrounded by a blue sky since this scattered blueish light comes in from all directions.

Answer 3

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. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

The white light from the sun is a mixture of all colours of the rainbow. This was demonstrated by Isaac Newton, who used a prism to separate the different colours and so form a spectrum. The colours of light are distinguished by their different wavelengths. The visible part of the spectrum ranges from red light with a wavelength of about 720 nm, to violet with a wavelength of about 380 nm, with orange, yellow, green, blue and indigo between. The three different types of colour receptors in the retina of the human eye respond most strongly to red, green and blue wavelengths, giving us our colour vision.

then there is a puzzle as to why the sky does not appear violet, the colour with the shortest visible wavelength. The spectrum of light emission from the sun is not constant at all wavelengths, and additionally is absorbed by the high atmosphere, so there is less violet in the light. Our eyes are also less sensitive to violet. That's part of the answer; yet a rainbow shows that there remains a significant amount of visible light coloured indigo and violet beyond the blue. The rest of the answer to this puzzle lies in the way our vision works. We have three types of colour receptors, or cones, in our retina. They are called red, blue and green because they respond most strongly to light at those wavelengths. As they are stimulated in different proportions, our visual system constructs the colours we see.
When we look up at the sky, the red cones respond to the small amount of scattered red light, but also less strongly to orange and yellow wavelengths. The green cones respond to yellow and the more strongly-scattered green and green-blue wavelengths. The blue cones are stimulated by colours near blue wavelengths which are very strongly scattered. If there were no indigo and violet in the spectrum, the sky would appear blue with a slight green tinge. However, the most strongly scattered indigo and violet wavelengths stimulate the red cones slightly as well as the blue, which is why these colours appear blue with an added red tinge. The net effect is that the red and green cones are stimulated about equally by the light from the sky, while the blue is stimulated more strongly. This combination accounts for the pale sky blue colour. It may not be a coincidence that our vision is adjusted to see the sky as a pure hue. We have evolved to fit in with our environment; and the ability to separate natural colours most clearly is probably a survival advantage.

Answer 4

the sky is blue.

it is not reflected by the ocean, but by the color spectrum. the color spectrum has violet, blue, cyan, green, yellow, orange, and red.

john tyndall explained this as follows: light passes through a clear fluid holding small particles in suspension, the shorter blue wavelengths are scattered more strongly than the red.

so we can conclude that on a clear cloudless day-time sky, can be blue because molecules in the air scatter blue light from the sun more than they scatter red light.

Answer 5

The sky is violet. This is the visible wavelength that scatters the most in out atmosphere.

We see the sky as blue, however. This is the visible wavelength that scatters almost as much violet. We see the blue instead of violet because our eyes are more sensitive to the blue.

Answer 6

It depends on the time of day, the clouds, and atmosphere at the time. Most of the time, in the day it is sky blue or light blue. At night it's dark because the sun goes down.

Answer 7

A co-worker of mine once told me that "the sky isn't really blue; it just looks that way because of the light reflecting off of it." It was possibly the most idiotic statement I've ever heard in my entire life.

Answer 8

in fact the sky is just an invisable layer, but beneath it is the stars and that's why its blue or whatever color it seems to you.

Answer 9

Actually, the sky is black. It is only blue in daytime because the sun's colour spectrum is focused into the "blue" area.

Answer 10

the light reflected or scattered through the atmosphere when perceived by the eyes appear to be blue in the short wavelength of the visible spectrum

Answer 11

It all has to do with color wave lengths if its early or late in the day it will be orangy and if its in the middle of the day it will be blue.