how rainbows are formed?

Sunlight is composed of light of varying wavelengths. Short wavelength light appears blue, violet and indigo, and long wavelength light appears red, orange and yellow. When sunlight enters a raindrop in the air, the light splits into a multitude of colors. This light then reflects off the back of the raindrop and re-emerges in the direction in which the light first entered. The light emerging from many raindrops creates a rainbow.

it is a complicated yet simple process. a physics text would help better with figures

You can form a rainbow many ways you can do it as a science experiment with water and oil,or tyou can wait and let mother nature to deliver one for you to see no matter what they are very beautiful to look at always keep your curiousity working that is how you will learn.

the way I learned it was a very very complicated way.

Here you go some intresting facts about a rainbow:) Ordinary white light, like that from the sun, is made up of many different colors all of which have a different wavelength. Normally, when we see light from the sun, it appears colorless. However, Isaac Newton discovered in 1666 that when he passed regular sunlight through a prism (basically, a triangular piece of glass), the prism would split the light up into a band of colors. The band of colors is called the spectrum which appears in the order of red, orange, yellow, green, blue, indigo, and violet. When it rains, the air is filled with raindrops. These raindrops act like a prism. If sunlight passes through the raindrops at the proper angle it is split into its spectrum, which is made up of the colors of the rainbow. You can make your own rainbow at home by filling a plastic box with water and placing it near a sunny window. If the wall next to the window isn’t white, place a piece of white paper next to the window. Next, place a mirror inside the box of water facing the window. The mirror needs to be tilted towards the sunlight. The wedge of water in the front of the mirror acts as the prism and the mirror reflects and image of a rainbow on your wall.

Have u studied physics..just read