Why are the rainbows colorful? Please, 3Q

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Because it's colorful, it's called a rainbow.

Because it looks colorful, it's colorful.

Light refraction! Theoretically, white light contains 7 colors, which are usually invisible, but when the air humidity changes after rain, it will refract 7 colors!

Principle: Dispersion of light.

Sunlight (white light) is composed of many other types of light, and different wavelengths of light have different refractive indices when passing through a prism. Red light has a long wavelength and a small refractive index; Violet light has a short wavelength and a large refractive index. Therefore, when a beam of light passes through the prism, it will turn red from top to bottom... Purple.

After the rain, there will be a lot of small water droplets in the sky, and these small water droplets will play the role of a prism, and the rainbow will be produced, of course, it is related to some other factors, but the principle is the dispersion of light.

It's all called a rainbow, it must be colored, a rainbow is a colored light, and a color is a color.

This is the phenomenon of dispersion of light! It is a common physical phenomenon!

If it's of another color, it's called an x rainbow.

A rainbow is a small drop of water that is refracted by the sun and has a different phenomenon, which should also occur if you put a prism in the sun.

Ask Newton Legend has it that light of different wavelengths has different colors, so why do different wavelengths of light have different colors? I don't know, the daylight we usually see is a composite light, composed of multiple frequencies of light.

Because after the rain, there are small water droplets in the air, and because the speed of light propagation in different media is different, the speed of propagation is different and it is necessary to keep the distance from the fastest passing through the object, which leads to different refraction angles when passing through different obstacles.

The rays of the rainbow are separated from the composite light at different angles when passing through the raindrops due to their different frequencies from each other. What we see is a single pure light of various wavelengths. Hence there are different colors.

Why different wavelengths of light have different colors I don't know, and no one knows ......Legend has it that photon energy is different ......What does energy have to do with color, who knows how to tell me?