Explanation Text // Rainbow

Rainbow

Rainbow is a phenomenon caused by reflection, refraction and dispersion of light in water droplets resulting a spectrum of light appearing in the sky. Rainbows caused by sunlight always appear in the section of sky directly opposite the Sun.

When sunlight encounters a raindrop, part of the light is reflected and the rest enters the raindrop. When this light hits the back of the raindrop, some of it is reflected off the back. When the internally reflected light reaches the surface again, once more some is internally reflected and some is refracted as it exits the drop. And then the colors blend together creating a rainbow.

A rainbow does not exist at one particular location. Many rainbows exist; however, only one can be seen depending on the particular observer's viewpoint as droplets of light illuminated by the sun. All raindrops refract and reflect the sunlight in the same way, but only the light from some raindrops reaches the observer's eye.







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