Yesterday evening in Jinshan, the sky was full of wind and clouds, a strong convective weather after "brewing", the storm and rain poured down, not long, with the strong convective weather weakened, the sky appeared a beautiful rainbow.
Photo: Zhou Zhiwei
Photo: Zhou Zhiwei
Photo: Zhou Zhiwei
It is understood that yesterday was the fifth high temperature day of this year, and the Shanghai Central Meteorological Observatory has successively issued five early warning signals of high temperature yellow, lightning yellow, rainstorm blue, wind yellow and hail yellow since the morning. After three o'clock in the afternoon, high temperature and strong convection met, and strong convective weather appeared in Jinshan, and for a time the wind was fierce, the dark clouds were pressed to the top, and the torrential rain was like a note.
Photo: Zhuang Yi
Photo: Zhuang Yi
Photo: Zhuang Yi
Soon after the storm was abused, the sky opened, the sun returned, and people were surprised to see the rainbow, which made the citizens and netizens marvel at the double rainbow.
For a time, in Weibo, WeChat circle of friends and other places, rainbow photos instantly "dominate the screen". Did you see it and photograph it?
Photo: Wang Yiming
Photo: Wang Yiming
Photo: Wang Zhigang
Photo: Wang Zhigang
Photo: Wang Zhigang
Image source: Shanyang Pastoral
Photo: Wu Yajun
Why there is a rainbow, let's popularize it! Rainbows are formed when sunlight hits small droplets in the air that are close to spherical, causing dispersion and reflection. When sunlight enters the water droplet, it will be reflected in the water droplet at different angles at different angles, of which 40 to 42 degrees is the strongest, resulting in the rainbow we see.
When sunlight enters the water droplet, it is refracted once, then reflected on the back of the water droplet, and refracted again when it finally leaves the water droplet, a total of one reflection, two refractions. Water has a dispersive effect on light, different frequencies of light refraction frequency is different, red light refractive index is smaller than blue light, and because light is reflected in the water droplet, so we can see the spectrum is reversed, red light at the top, other colors of light below. SUMMER
This morning at 10 a.m.,
The reporter also photographed the appearance of a sun halo above the golden mountain,
These special weather phenomena happen to appear one after another,
It's amazing!
Photo: Zhu Lin
Photo: Zhu Lin
Source: i Kingsoft