Rainbow
Rainbow is an optical phenomenon and meteorology that produces continuous spectrum of light in the sky when the sun shines during rain. It is a colorful curve with a red color on the outermost and purple arch on the deepest arch. By order, the colors are red, orange, yellow, green, blue, indigo and purple. The rainbow is produced when the light is inflated through the water points in the air. That's why rainbows are always visible after rain. It is curved because of water drops in circular / spherical air. But usually the bottom of the rainbow is "sheltered" by the earth. This rainbow phenomenon can also be seen by backing the sun and spraying water on a sunny day.