How did rainbows appear? How did the rainbow appear?

Due to the fact that there are many water molecules in the air after rain, sunlight is refracted in the sky.

You have to reflect to see it.

After the summer rains, the clouds disperse and the sun emerges, and a semicircular rainbow appears in the sky opposite the sun.

The rainbow is caused by the emission and refraction of the water droplets in the air from the broad rock sunlight.

We know that when the sunlight passes through the prism, the direction of the foreground will be deflected, and the original white light will be smiling.

The thread is broken into 7 color bands of red, orange, yellow, green, cyan, blue, and violet.

After rain, there are many tiny water droplets floating in the air, and when the sunlight hits the small droplets, they will be refracted and dispersed.

into 7 colors of light. Many small water droplets refract the sunlight at the same time, and then reflect it into our eyes, and we will see one.

A semicircular rainbow. The color bands of the rainbow are distinct, with the red one coming out on the outside, followed by six types: orange, yellow, green, cyan, blue, and purple.

Color. The size of the water droplets in the air determines the brightness and width of the rainbow. When the water droplets in the air are large, the rainbow is bright. Also.

Narrower; On the contrary, if the water droplets are small, the rainbow color will be lighter and wider.

We can't see the rainbow when we face the sun, we can only see the rainbow with the sun on our backs, so the rainbow appears in the morning.

In the west, the rainbow at dusk always appears in the east. But we can't see it, we can only see it when we look down from a high altitude by plane.

The appearance of the rainbow is related to the change of the weather at that time, and we can generally infer from the position of the rainbow in the sky.

Sunny or rainy. When there is a rainbow in the east, it is not easy to rain locally, while when there is a rainbow in the west, it is possible to rain locally.

But the sex is great. The visibility of a rainbow depends on the size of the small water droplets in the air, the larger the volume of the small water droplets, the brighter the rainbow formed, and the smaller the size of the small water droplets, the less obvious the rainbow formed.

In winter, the temperature is low, small water droplets are not easy to exist in the air, and there are few opportunities for showers, so there are generally no rainbows in winter.

A rainbow is an optical phenomenon in meteorology. When sunlight hits raindrops in mid-air, the light rays are refracted and reflected, forming an arched spectrum of seven colors in the sky. There are different theories about the seven colors of the rainbow, and the most common one in China is (from the outside to the inside).

Red, orange, yellow, green, blue, purple. The Western sayings are: red, orange, yellow, green, blue, indigo, and violet, which are named after the scientist Newton decomposed the seven primary colors.

In fact, as long as there are water droplets in the air and the sunlight is shining at a low angle behind the observer, it is possible to produce a rainbow phenomenon that can be observed. Rainbows are most common in the afternoon, when the weather clears after the rain. At this time, the air is less dusty and full of small water droplets, and one side of the sky is darker because there are still rain clouds.

The rainbow will be easier to see if the sun is visible without clouds above or behind the observer's head. Another place where rainbows are often seen is near waterfalls. Splashing water or spraying water mist in the air with your back to the sun on a sunny day can also artificially create a rainbow.

Evening rainbow is a rare phenomenon that can occur at night when the moonlight is strong. Because it is difficult for human vision to distinguish colors in low light at night, the evening rainbow looks as if it is completely white.