Why is the sky blue ?

Question

People say that the ocean is a reflection of the sky so if the sky is gray then the water is gray but why is the sky blue in the first place ? Could it be possible that the sky is a reflection of the water instead?

Answer 1

Light is an electromagnetic wave. If you stand in one spot as a light wave passes by, there will be an oscillating electric field and an oscillating magnetic field, which are perpendicular to each other. If the light is in the range of frequencies that we can see, then the frequency of the vibration affects the color of the light. The color-vision receptors in our eyes, the cones, are of three types: "blue" receptors that respond to light over a broad range of high frequencies, "green" receptors that respond to medium frequencies, and "red" receptors that respond to low frequencies. The ranges of sensitivity of the receptors overlap considerably, but they have their maximum sensitivities at different frequencies. The perceived color depends (among other things) on the relative strengths of the signals from these receptors.
Molecules are usually electrically neutral, but they are made of charged objects: their atoms consist of negatively charged electrons and positively charged nuclei. If there is an electric field at the position of an atom, the nucleus will move a short distance in the direction of the field and the electrons will move the other way, and the atom will become a "dipole": the positive and negative charge will be centered around different places. A molecule made of such atoms will acquire its own electric field, something like the magnetic field of a bar magnet.
A dipole's electric field falls off more rapidly with distance than it would if the molecule had a net electric charge. This is because at large distances, the fields from the positive and the negative charge tend to cancel each other out, as the difference between their average positions becomes less important.
However, if the dipole is made to oscillate-- that is, if the positive and negative charge wiggle back and forth, out of phase with each other-- then the molecule can produce electromagnetic radiation of its own. This is how air molecules scatter light: the oscillating electric field of the incoming wave makes the molecules develop oscillating dipoles, which in turn give off radiation.
The radiation destructively interferes with the incoming wave in the forward direction. The original wave is lessened in intensity, and new waves move out in all other directions, so that overall energy is conserved (this requirement is sometimes called the "optical theorem"). The net effect is that light energy that was moving in a straight line from the sun ends up traveling in some other direction.
Since sunlight appears white but the sky is a robin's-egg blue, it must be that the scattered light excites our blue-sensing cones more, and our red-sensing cones less, than the original sunlight. The distribution of frequencies in the scattered light must be biased toward high frequencies.

Answer 2

Well sky is blue because of Dispersion of Light. It is higher Physics. But i will tell yuou briefly. When the white light from the sun comes to Earth it crosses the Earth's atmoshphere which is denser than the outer space. So when this light enters the atmosphere it scatters. White light is made up of seven different colours -
Violet
Indigo
Blue
Green
Yellow
Orange
Red.

In this violet colour scatters the most so the light blue light spreads throughout and we see the sky blue

Answer 3

The sky is blue due to an effect called Rayleigh scattering. Basically light interacts with particles in the upper atmosphere. The shorter the wavelength of light, the more they are scattered; so blue light is scatter toward us below, while the yellow, orange and red keep on going. This is also why sunsets are yellow, orange, and red; the blue has been scattered out.

Answer 4

A Sun ray will contain seven colors, they are, violet, indigo, blue, green, yellow, orange, and red. While the sun ray entering the atmosphere of Earth, the blue color is get refracted back, allowing other colors to reach Earth. Hence it appears blue. The Sea water looks blue due to reflection of sky, which is blue in color.

Answer 5

The sky is blue because of the reflection of light off of all of the elements in the sky such as water, air, and other substances which make up the atmosphere.

Answer 6

Because the oceans on earth are blue and reflect light from the sun.

Answer 7

Thanks to Anthony Spear!

Like my dad said "Stupid questions sit mate"!

Due to an explosion that took place in 2316BC at a local paint factory during the Mongolian invasion into China [before the Great Wall], particles of hydrogen got evaporated by the heat and got stuck on top of the stratosphere. Now hydrogen is supposed to be colorless but remember - it was a paint factory that caused that! A BIG ASS PAINT FACTORY!

Have fun mate!

Answer 8

ask the sky

Answer 9

Because my heart is blue.

Answer 10

Sorry? It's grey as far as I can see