One afternoon, it began to rain cats and dogs. After a while, the rain stopped and the sun appeared in the sky. At this moment, I suddenly saw a rainbow on the other side of the sky. Rainbow is beautiful, with seven colors: red, orange, yellow, green, cyan, blue and purple. It is like a colorful bridge, and it is like a fairy's fluttering ribbon.

So, how is the beautiful rainbow formed?

I ran to ask my mother, and she shook her head and said, "I don't know, look up the information yourself!" " "So, I came to the computer with this question, opened the Baidu website, and entered the words' How is the rainbow formed'. A lot of relevant information appeared on the computer. I saw on the computer that the rainbow is formed by the dispersion and reflection caused by the sunlight shining on the circular water droplets in the air. When a large number of small water droplets are suspended in the sky, the sun will shoot into the water from different angles. First. Because the refractive index of light with different wavelengths is different, the angle of light entering the water drop is also different, and the seven colors of light that synthesize sunlight will be decomposed and arranged beautifully to form a rainbow. The computer still says that the rainbow is most likely to appear in the afternoon when it clears up after the rain. At this time, the air is less dusty and full of water droplets, and one side of the sky is relatively dark because of rain clouds, so that we can easily see rainbows. Another place where rainbows are often seen is near waterfalls. In addition, in sunny weather, you can also turn your back on the sun and spray water or mist in the air to create an artificial rainbow!

So, according to the prompt of the computer, I took out a water gun and sprayed water mist into the air with my back to the sun. Sure enough, a beautiful rainbow appeared in the sky.

I learned a lot through this rainbow experiment. In fact, science is around us. As long as we are willing to explore, we have a pair of eyes that are good at discovering, just like discovering the mystery of science.