Why is there a rainbow in the sun rain, and does the sun rain have a rainbow

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.

This is because the small droplets in the air after the sun rains can refract the sun's rays, causing them to appear different colors in the middle of the air.

This is a natural phenomenon.

Not necessarily, not when the sun rains, there will be rainbows.

Rainbows are most commonly seen in the afternoon, when the air is less dusty and filled with small water droplets, one side of the sky is darker because there are still rain clouds, and the observer has no clouds above or behind him to see the sun. Another place where rainbows can often be seen is near waterfalls, where artificial rainbows can also be created by sprinkling water or spraying water mist in the air with their backs to the sun on a clear day.

Rainbows are caused by the dispersion and reflection of small water droplets in the sky that are almost spherical in the sky. When sunlight hits a water droplet, it is incident at different angles at the same time, and it is reflected at different angles within the water droplet. The reflection is most intense at 40 to 42 degrees, resulting in the rainbow seen.

When causing this anti-object hole, sunlight enters the water droplet, first refracts once, then reflects on the back of the water droplet, and finally refracts again when it leaves the water droplet, for a total of one reflection and two refractions. Because water has a dispersive effect on light, the refractive index of light at different wavelengths is different, the refractive index of red light is smaller than that of blue light, and the deflection angle of blue light is greater than that of red light. Since the light is reflected within the water droplets, the observer sees the spectrum upside down, with the red light at the top and the other colors at the bottom.

The rain stopped, the sky cleared, and rainbows sometimes appeared on the horizon. Behind this rainbow, there is a wealth of knowledge. Why do rainbows appear after rain?

Why is the rainbow made up of 7 colors? Why is the shape of a rainbow arc instead of a straight line? Let's uncover the mystery of this "seven-colored arch bridge" together.

Why do rainbows appear after rain?

A rainbow is an optical phenomenon formed by the refraction and reflection of light rays when sunlight hits water droplets in the air. There are many small droplets floating in the air just after rain, when the sun shines.

When irradiated, refraction and internal reflection occur.

Visible light from the sun.

3354 Red, orange, yellow, green, blue, indigo, violet 7 colors have different wavelengths. When irradiated by these small water droplets in the air, the various rays of light are refracted to the small water droplets to varying degrees, thus decomposing to form a 7-color spectrum.

The degree of distinctiveness of a rainbow is closely related to the size of the small water droplets. The larger the volume of the small water droplets, the more visible and bright the rainbow we can see with the naked eye. The smaller the size of a small droplet, the more inconspicuous it is.

Rainbows are most commonly seen in the summer afternoons to evenings, and are most likely to appear after rain when the sky is clear. Double rainbow.

It's no exception. At this time, there is very little dust in the air and it is filled with small water droplets. There were still rain clouds on one side of the sky, very dark, but observers.

There are no clouds left behind the head or back to see the sun, so the rainbow is easier to see.

In addition, the clarity of the 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 volume of the small water droplets, the less obvious the rainbow formed. Usually in winter, the temperature is low, small water droplets are not easy to appear in the sky, and there is less chance of rain, so rainbows usually do not appear in winter. Thermal convection in summer.

The weather is frequent, thunderstorms are frequent, and it clears up after a hasty fall, so it's easier to see rainbows.

Regionally, the appearance of a rainbow is subject to a certain amount of water vapor.

conditions, so it is more common in places with rainy and humid air in the south of our country, and there is a greater possibility of a double rainbow beauty. For example, Guangxi, the water system is developed, and the air humidity.

high, even if it doesn't rain, there is a greater chance of a double rainbow beauty.

Generally speaking, water droplets in the air overflow, less dust, high field of view, and sunlight can be seen at the right angle. For example, it is also easy to see around the waterfall. But the double rainbow is the result of the light reflecting twice on the water droplets, so in the plateau areas where rainbows often appear.

It also rarely appears. From this point of view, being able to see a double rainbow after rain is also a valuable experience.

This is because the sunlight reflects the rain after it rains, so that the color of the water is radiated through the action of light.

The reason why you can see the rainbow when the sun rises after the rain is caused by the refraction of light from sunlight into the raindrops in the sky.

After the rain, there are many tiny water droplets floating in the air that have not yet been evaporated, and when they are refracted by sunlight onto the water droplets, they disperse into seven colors of light, which is called a rainbow.

It is a natural phenomenon that has been popular since a long time ago, depending on the weather after the rain, because after the rain it will become clear, and when the weather is clear, a rainbow will also appear.

That's because there are places where there is still a lot of water vapor in the air, and you can see colorful rainbows through the refraction of the sun.

This is because the air is humid after the rain, and there is some water vapor in the air, and rainbows appear when the sun shines.

When it rains, there are a lot of water molecules in the air, and the sun will refract different colors when it hits these water molecules, so it is easy to see it.

Because after the rain, the air is filled with a lot of moisture, and after some light refraction, it is easy to cause the appearance of rainbows.

Causes of rainbows after rain.

1. When it rains or after the rain, the air is filled with countless small water droplets that can deflect the sun, when the sunlight passes through the water droplets, it not only changes the direction of progress, but also is decomposed into red, orange, yellow, green, blue, indigo, purple and other colors, if the angle is appropriate, it becomes the rainbow we see.

2. The size of the water droplets in the air determines the brightness of the rainbow, the larger the water droplets, the brighter the rainbow, and the smaller the water droplets, the lighter the rainbow. In summer, there are often thunderstorms or showers, and the scope of these rains is not large, and it is often a day difference that rains here and there, and when the sun celebrates this light and shines on the small droplets that stay in the air after the rain, a beautiful rainbow appears.

3. Comparatively speaking, the air is dry in winter, there are few opportunities for rain, most of them are snowfall, and snowfall will not form rainbows, so there is no rainbow in winter. However, in rare cases, rainbows can occur when there are the right conditions in the sky for the formation of rainbows.

After the sun rains, we are always able to see a rainbow in the sky. This is because after rain, there are many tiny water droplets in the air, and when sunlight passes through these tiny droplets, it will be refracted and dispersed into 7 colors. These colors will enter our eyes, and we will be able to see a rainbow in the sky, and this rainbow has 7 colors, which are red, orange, yellow, green, cyan, blue, and purple.

We are also curious about this question, because we can often see rainbows after rain, and rainbows are also very beautiful, and when we see rainbows, our mood becomes very beautiful, and we think that this is also very auspicious. In addition to a single-layer rainbow, if there is more moisture in the air and there is more sunlight, there may also be a double-layer rainbow, which is also very beautiful. In fact, the formation principle of the rainbow is relatively simple, because after the rain, there are many tiny water droplets in the sky, these water droplets are very few, and our naked eyes cannot see them at all, but these water droplets do exist in the sky.

After the sun is released, the sunlight will pass through these water droplets, resulting in a refraction that divides the white light into seven colors, forming a seven-color rainbow.

In fact, the formation principle of the rainbow is relatively simple, because the sunlight can be turned into 7 colors after reflection, and these colors can form a ribbon of color in the air, which is the rainbow we see. So we can also take pictures when we see the rainbow, because the rainbow exists for a very short time, and when the sun is relatively large, it can evaporate the water in the air, and the rainbow will disappear. Therefore, as long as there is the sun and the moisture in the air is relatively sufficient, a rainbow can be formed, and rainbows are also very common.

Because after the rain, the humidity of the air is relatively large, and there is a lot of water vapor in the air, which will reflect the sun, so some rainbows will appear.

Because after rain, the sun's rays will be refracted by some rain, thus forming a rainbow, which is a natural phenomenon of light.

Because there are many small water droplets in the air, this can happen through the reflection and refraction of light.

After the rainbow appears, we can also roughly judge the weather based on its location. When a rainbow appears in the east, the probability of rain in your area is lower. Conversely, if there is a rainbow in the west, there is a good chance that it will rain in your area.

In addition, a rainbow can be seen around the water curtain of the waterfall on a clear day, and the formation of the rainbow is the same as that of the rainbow after rain.

Sunlight is composed of seven colors, and the sunlight is refracted by water droplets in the atmosphere and then color = scattered, and the virtual image of these lights entering the observer's eye is the rainbow.

This is actually an optical phenomenon in meteorology. When the sunlight hits the water droplets in the air, the light is refracted and reflected, forming an arched multicolored spectrum on the sky, which becomes the rainbow that we usually see after rain.

Rainbows appear after rain because sunlight hits small water droplets in the sky that are nearly round, causing dispersive reflection of light.

Actually, it's a light effect, because when it rains, the clouds become cleaner, so the direct sunlight changes a bit.