Why is there a rainbow in the sky after rain?

We usually see rainbows after the rain. They are curved, usually semicircular, and colorful. The most common colors are red, orange, yellow, green, blue, indigo, and purple. They are very beautiful. Why is there a rainbow in the sky after the rain? I guess many friends have this question. Let's learn more about it!

Contents of this article

1. Why is there a rainbow in the sky after the rain?

2. Principle of rainbow formation

3. How to post a circle of friends about rainbow

Why is there a rainbow in the sky after the rain?

The rainbow in the sky after the rain is an optical phenomenon. There are numerous tiny water droplets in the air. When light passes through the water droplets, it is refracted and then reflected by the ground to form bright arcs of red, orange, yellow, green, cyan, blue and purple. The larger the water droplets, the brighter the rainbow.

A rainbow in the sky after rain is an optical phenomenon. There are a large number of tiny water droplets in the air after rain. When the sun appears, the light shines on the surface of the water droplets, then passes through the small water droplets, and finally reflects back into the air from the bottom of the water droplets, thus forming a rainbow.

When light passes through water droplets, refraction occurs. Sunlight is composed of various colored lights with different wavelengths, which are called seven colors when refracted. After reflection from the ground, the order from outside to inside is red, orange, yellow, green, cyan, blue, and purple, forming a bright arc of light.

The visibility of a rainbow depends on the size of the water droplets. The larger the volume of the water droplets in the air, the brighter the rainbow formed. Conversely, the smaller the volume, the less obvious the rainbow formed. Generally, the temperature is lower in winter, and it is not easy for water droplets to exist in the air, so no rainbow will appear.

How rainbows form

The formation principle of rainbow:

1. A rainbow is formed when sunlight penetrates rain particles.

2. Originally, light travels straight, but it also has the property of refracting once it enters water.

3. Therefore, sunlight will be refracted when passing through rain particles. At this time, since the angle of light refraction varies with color, the seven colors will be refracted at different angles.

Rainbow: It is an optical phenomenon in meteorology. When sunlight hits water droplets in the air, the light is refracted and reflected, forming an arched colorful spectrum in the sky. It is common after rain. The shape is curved, usually semicircular. The colors are bright. The most common term for the seven colors of light in East Asia and China is red, orange, yellow, green, blue, indigo, and violet.

How to post about rainbow in Moments

My copywriting about posting rainbows on Moments:

1. Life is the process of living. How can there be no wind or rain? It is because of the baptism of wind and rain that we can see the colorful rainbow; it is because of the pain of failure that we can taste the joy of success.

2. Use the pen of diligence to draw the most beautiful rainbow.

3. They are like flowers, like a beautiful forest, like a rainbow in the sky. Their existence will only make people feel a little surprise in the mediocre life.

4. A rainbow is formed only under certain conditions, but it is nothing but light that can never be touched.

5. The rainbow is like a colorful palette that can draw beautiful patterns at any time.

6. Don’t cry. Try to look forward. Believe that the sun always comes after the rain, and you will eventually see a rainbow.

7. Life is like a rainbow. You don’t know where the other end leads to, but you will know that it is always there.