Under normal circumstances, adding rainbow after Douyin nickname means gay, but there are also many netizens who add rainbow because they look good. You still need to understand this.

The rainbow represents beauty, fairy tales, nature, and fantasy. The rainbow will appear after the rain, which means that the beauty you want to pursue can only be achieved after experiencing certain setbacks. Also, according to Greek mythology, the rainbow is the bridge connecting heaven and earth. In ancient times, different civilizations had different beliefs about rainbows.

What is a rainbow?

Rainbow, also known as Tiangong (Hakka), Tianhong, Jiang, etc., referred to as rainbow, is an optical phenomenon in the weather. When sunlight shines on water droplets in mid-air, the light is refracted and reflected , forming an arched colorful spectrum in the sky, showing seven colors from the outer ring to the inner ring: red, orange, yellow, green, blue, indigo, and purple. There are actually countless colors in the rainbow. For example, there are many subtle differences between red and orange, but for simplicity, only seven colors are used as distinctions.

Sunlight is composed of 7 colors: red, orange, yellow, green, blue, indigo, and violet. When it shines on water droplets, it will be refracted for the first time. Due to the differences between these 7 colors of light, Different wavelengths will have different deflection angles. At this time, sunlight will be decomposed into 7 types of monochromatic light; after the refracted monochromatic light reaches the back of the water droplet, it will be reflected according to the reflection law; the reflected monochromatic light Will return to this side of the incident water droplet, at which time a second refraction will occur, and the water droplet will still be emitted in the form of monochromatic light.