Why can t you see a rainbow after raining

How is a rainbow formed? Rainbow is a natural phenomenon caused by the reflection and refraction of light from sunlight into water droplets in the air. We know that when sunlight passes through the prism, the direction of travel is deflected, and the original white light is broken down into bands of red, orange, yellow, green, blue, indigo, and violet.

When it rains, or after rain, the air is filled with countless tiny droplets that can deflect the sun. When sunlight passes through water droplets, it not only changes the direction of travel, but is also decomposed into red, orange, yellow, green, blue, indigo, violet and other colors. If the angle is right, it becomes the rainbow we see.

Generally speaking, rainbows only occur in summer, because there are many showers in summer, and sometimes, the sun rises in the east and it rains in the west, and the rain is not large. Winters are cold and dry, with little rain, and snowfall does not form rainbows.

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After the rain, there are still a large number of small water droplets floating in the sky, and these small water droplets are like lenses like small balls. As sunlight passes through them, it is reflected and refracted and weakened as it penetrates. At the same time, due to refraction, the original white light is decomposed into a seven-color light, but its color sequence is opposite to the halo, and it is arranged from red to purple from the outside to the inside, forming a rainbow.

However, if the sun is too strong and the temperature is too high, the water droplets may be evaporated quickly after the rain. Summer thundershowers have a narrow rain range, and the sky is unevenly distributed with water droplets, and the sky directly opposite the sun after the rain does not necessarily happen to have water droplets. None of the above will see a rainbow.

As long as the air humidity reaches a certain level, rainbows may appear. The absence of rain and the appearance of rainbows may be caused by high local humidity. Rainbows are caused by the dispersion and reflection of small droplets of water that are close to a circle when sunlight hits 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 of 40 to 42 degrees is the most intense, resulting in the rainbow we see.

Rainbow, also known as Tiangong (Hakka), rainbow, Jiang, etc., referred to as rainbow, is an optical phenomenon in meteorology, when the sun's rays shine on the water droplets in mid-air, the light is refracted and reflected, forming an arched colorful spectrum on the sky, from the outer circle to the inner circle is red, orange, yellow, green, blue, indigo, purple seven colors. In fact, the rainbow comes in an infinite number of colors, for example, there are many subtle colors between red and orange, but for the sake of simplicity, only seven colors are used as a difference.

Because there will be a lot of small water droplets in the air after rain, the water droplets are like a small prism, when the sunlight hits the water droplets in the air, the light is refracted and reflected, and is dispersed into red, orange, yellow, green, blue, indigo, purple, so that we can see the rainbow, the bigger the small water droplets, the clearer the rainbow.

This is because after the rain, there will be a large number of small water droplets suspended in the air, and when the light passes through these water droplets, the light will be refracted and the visible light of the sun is actually composed of various colors of light.

The wavelengths of each color of light are different, and the refractive index of light of different wavelengths is different, causing each spectrum to disperse and refract the water droplets, thus forming an arched colorful spectrum in the sky. Thus forming the rainbow that is seen.

This is because after the rain, there will be a large number of small water droplets suspended in the air, when the light passes through these water droplets, the light will be refracted phenomenon, and because in the refraction process of light, red, orange, yellow, green, blue, indigo, violet and other colors of light refract angles are different, forming the rainbow we see.

The degree of obviousness 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 small water droplets, the less obvious the rainbow formed.