Rainbow

Have you ever seen a rainbow? Or wondered why there are rainbows? Well, rainbows usually appear when there is a conjunction of sunshine and rain. Which means that rainbows form when it is raining in one portion of the sky while the sun is shining in another. If you have never seen a rainbow, it is an arch of seven bands of colour, starting from red, orange, yellow, green, blue, indigo, and violet.
If you have seen a rainbow, do you know how it is formed? The sun produces light, which is an electromagnetic radiation. It is not white like we think it is. It is actually seven colours, the colours of the rainbow. When light is passed through the two sides of a raindrop, it can be made to bend. The seven light frequencies are bent at different angles and are separated out. When the light is bending like this, it is called refraction. The different colours of the light spread out because of this refraction. The red light is bent the least and violet l...