rainbow
Rainbow, also known as days bow (Hakka), Tianhong, Jiang, etc., referred to as rainbow, is an optical phenomenon in the weather, when the sun shines into the air droplets, the light is refracted and reflected in the sky to form arched Rich, orange, yellow, green, blue, indigo, red, orange, yellow, green, blue, and so on. In the past, there are seven different colors in the colorful colors of the rainbow. purple. In fact, the rainbow has millions of colors, for example, there are many kinds of subtle differences in color between red and orange, but for simplicity, only seven colors are used as the difference. ...