彩虹，又称天弓（客家话）、天虹、绛等，简称虹，是气象中的一种光学现象，

Rainbow, also known as Tien Kung (Hakka), Rainbow, purple etc., abbreviated rainbow, is an optical phenomenon in the weather, when the sun light is irradiated air droplets, light is refracted and reflected in the sky arching colorful spectrum, from the outer to the inner ring was red, orange, yellow, green, blue, indigo, violet seven colors. In fact there are numerous rainbow of colors, for example, there are many colors in nuances between red and orange, but for simplicity, it is only seven colors as the difference.

Rainbows, also known as sky bows (Hakka words), tianhong, moths, etc., are an optical phenomenon in the weather, when the sun shines into the mid-air water droplets, the light is refracted and reflected, forming an arched colorful spectrum in the sky, from the outer ring to the inner circle is red, orange, yellow, green, blue, indigo, purple seven colors. In fact, rainbows come in countless colors, for example, there are many subtle colors between red and orange, but for simplicity, only seven colors are used as a difference.

Rainbow, also known as Tiangong (Hakka dialect), Tianhong, Jiang and so on, is an optical phenomenon in the weather. When the sunlight shines on the water drop in the air, the light is refracted and reflected, forming an arched seven color spectrum in the sky. From the outer ring to the inner ring, it is red, orange, yellow, green, blue, indigo and purple. In fact, there are countless colors of rainbow, for example, there are many subtle differences between red and orange, but for the sake of simplicity, only seven colors are used as the difference.<br>