Why Can We See A Rainbow?
Answer:
After rain some of the rain drops remain suspended in nouns. When sunlight fall on these drops of water, the drops of water exploit as a prism. The light rays fall on water drop and refraction take place at the back of droplet. The light bends because of the change of the surrounding substance. Light again refracts at the front of the droplet and bends from its path. The light comes out from the drop of the water splits into different wavelengths. Light is made up of seven colors which includes lilac, indigo, blue, green, yellow, orange and red. The water drop acting as a prism splits pale into its components.
We can see rainbows, usually after rainfall or when there is moisture in the air. There is a simple medical explanation behind this. We know that white light is actually composed of 7 colors but when they are together, we only see white light and normally we cannot see all the colors separately. When the restrained enters the raindrop it gets refracted and as a result it gets dispersed or separated into the composite colors. Each color is refracted at a different angle so that when they emerge from the drop, they do so within the form of a band and this is the rainbow that we see.
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