what color is the sky?

Answer 1

The sky is whatever color you perceive it as. It usually appears light-blue in the daytime due to the selective scattering of light in the atmosphere.

Answer 2

air is actually a very transparent,We see the colors because of scattering of light.during daylight the sky has the appearance of a deep blue surface,the sky is blue partly because air scatters short-wavelength blue light waves while the longer, red light waves go pass straight through.Near sunrise and sunset, most of the light we see comes in nearly tangent to the earth's surface, so that 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.

Answer 3

The sky is blue partly because air scatters short-wavelength light in preference to longer wavelengths. Combined, these effects scatter (bend away in all directions) some short, blue light waves while allowing almost all longer, red light waves to pass straight through. When we look toward a part of the sky not near the sun, the blue color we see is blue light waves scattered down toward us from the white sunlight passing through the air overhead. Near sunrise and sunset, most of the light we see comes in nearly tangent to the Earth's surface, so that 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.

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.

Why is the sky blue instead of violet?
Because of the strong wavelength dependence (inverse fourth power) of light scattering according to Raleigh's Law, one would expect that the sky would appear more violet than blue, the former having a shorter wavelength than the latter. There is a simple physiological explanation for this apparent conundrum. Simply put, the human eye cannot detect violet light in presence of light with longer wavelengths. There is a reason for this. It turns out that the human eye's high resolution color-detection system is made of proteins and chromophores (which together make up photoreceptor cells or "Cone" structures in the eye's fovea) that are sensitive to different wavelengths in the visible spectrum (400 nm–700 nm). In fact, there are three major protein-chromophore sensors that have peak sensitivities to yellowish-green (564 nm), bluish-green (534 nm), and blue-violet (420 nm) light. The brain uses the different responses of these chromophores to interpret the spectrum of the light that reaches the retina.

When one experimentally plots the sensitivity curves for the three color sensors (identified here as long (L), middle (M), and short (S) wavelength), three roughly "bell-curve" distributions are seen to overlap one another and cover the visible spectrum. We depend on this overlap for color sensing to detect the entire spectrum of visible light. For example, monochromatic violet light at 400 nm mostly stimulates the S receptors, but also slightly stimulates the L and M receptors, with the L receptor having the stronger response. This combination of stimuli is interpreted by the brain as violet. Monochromatic blue light, on the other hand, stimulates the M receptor more than the L receptor. Skylight is not monochromatic; it contains a mixture of light covering much of the spectrum. The combination of strong violet light with weaker blue and even weaker green and yellow strongly stimulates the S receptor, and stimulates the M receptor more than the L receptor. As a result, this mixture of wavelengths is perceived by the brain as blue rather than violet.

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Answer 4

The sky has no colour.
The colour you see is the refraction of light from the sun which makes it looks blue in certain time of the day.

Answer 5

it's not a color, but it takes on (or appears to have) many colors. All these colors are driven by particles in the air or by light being bent more or less depending on the angle of the sunlight passing through it.

Answer 6

The color that Oxygen glows when irradiated with gamma rays is blue.

Answer 7

Why do you need one specific answer? It depends on the weather and on your mood! I mean it depends on the way you want to see it! But it's not only blue!It could be black, grey, purple, yellow, orange! And the sure thing is that can affect your emotional state!

Answer 8

the sky has no colour it appears blue because our earth is sourrounded by 70percent of water bodies covered so the colour of the water reflects so

Answer 9

blue.

well of course, this depends on the wether, but on a normal, sunny day, the sky is blue. this is because of our atmosphere.

Answer 10

Right now, where I live it is very dark blue with a few twinkling stars visible.