How do rainbows form, and how does it make the colors???

Question

How do rainbows form, and how does it make the colors???

Answer 1

Well really it depends who you ask most people will take the scientific view that it is caused by the refraction of light through A mist left by the rain witch acts like a prism.  

   The religious view is that god makes it to remind us he won't flood the earth again.

   Personaly I believe both

Answer 2

Please see the link below

Answer 3

rainbow, arc showing the colors of the spectrum, violet inside and red outside, which appears when the sun shines through water droplets. It often appears while the sun is shining after a brief thundershower in the late afternoon or on fog layers. The sun, the observer's eye, and the center of the arc must be aligned—the rainbow appears in the part of the sky opposite the sun. The rainbow is an arc of 180° if the sun is at the horizon, and it cannot appear if the sun is high in the sky. It is caused by the refraction and reflection of rays from the sun on a “sheet” of water droplets. The light is refracted as it enters the sphere of the individual water drop, then is reflected from the drop's opposite side, and is again refracted as it leaves the drop and passes to the observer's eye. When conditions are suitable, a double rainbow may be seen; a larger, paler, secondary rainbow with colors reversed (red inside) outside the primary arc is caused by two refractions and two reflections of the ray while it is inside a drop. The “rainbows” of mist, lawn spray, and spray from a waterfall are similarly caused. The lunary rainbow, seen much less often, is usually observable soon after dark following a brief summer storm or shower when the moon is nearly full. Aristotle was first to devote serious attention to the rainbow, but his mistaken explanation of it misled thinkers for centuries. Descartes in the 17th cent. also attempted to account for the phenomenon but the correct explanation of it could not be furnished until the physics of light and its reflection and refraction were understood and the spectrum explained. In religion and art the rainbow symbolizes God's promise of mercy to mankind after the Deluge (Gen. 9.13). The Greeks and Romans called the rainbow the sign of Iris, messenger of the gods. The Inca and other Native Americans regarded the rainbow as a gift from the sun-god. There are fairy tales of searches for the pot of gold at the foot of the rainbow.

Answer 4

It's actually a very interesting question, and has to do with water droplets reflecting and refracting light internally.

Roughly speaking, light enters the water droplet, and then bounces around inside, and then leaves the water droplet. At certain angles relative to the incoming light rays, the light becomes focused -- this is the rainbow that you see. The difference in the index of refraction of different wavelengths of light causes the slight separation of colors so that you see a rainbow, rather than one really bright band. (A prism splits light using the same property)

More precisely, the light enters the droplet, and the law of refraction alters its direction. Then it bounces twice within the droplet (angle of incidence = angle of reflection), and then it leaves the droplet (invoking the law of refration again). Supposing the droplet is a perfect sphere, you can describe the angle at which light enters and then leaves in an equation, which you will find diverges at a certain angle -- that is, light becomes concentrated at that angle (deviating from the angle it was originally traveling at). This is what results in a rainbow.

In certain circumstances, you will see double rainbows -- this results from a further reflection within the droplet.