On a weekend in September 2020, a rainbow appeared over the Pearl River, and the scenery was beautiful. Usually we can see a semi-circular rainbow, but in this video we see a circular rainbow, which is a picture overlooking the whole rainbow from high altitude. It's really beautiful. In recent years, the environment in Guangzhou has been particularly good, and urban sanitation has always been among the best. Coupled with the special humid environment in Guangzhou, there is plenty of water vapor in the air after the rain in the morning and evening, and the sun shines from a specific angle (the incident angle of the sun is 42? About hours (neon is 52? Left and right). Everyone knows the difference between neon and rainbow. We all know that the rainbow has seven colors, red, orange, yellow, green, blue, indigo and purple, which enter the journey of sunlight reflection through small water drops in the air. Red is inside, purple is outside, and the lighter color is called neon, also called secondary rainbow. The bright color with red outside and purple inside is called Zheng Hong. Generally speaking, the position of rainbow is relatively low, and the position of neon is relatively high. We should have learned this knowledge in primary school, but later we missed the beauty of neon and forgot the principle.
There are many legends about neon. In China mythology, where the rainbow rises, Nu Wa tried to fill the sky with five-colored stones, ending a big flood that fell from a gap in the sky. Of course, these are just myths and legends. We hope this rainbow in the Pearl River can drive away the bad luck in 2020. The first half of the year is windy, rainy and hard, but after the storm, we are happy to see the rainbow, our life will get better and better, and our country will get healthier and stronger. Let this once-in-a-century spectacle sweep away bad luck. You can also purify your heart while polishing your eyes, and wish everything happiness and health.