colorrainbow! colorrainbow!
We often say
There is a rainbow after the storm
Yesterday evening
Some residents of Binhai District actually saw a rainbow!
In Beihai Pearl Community, Neptune Community and Hongrun Jinmao Mansion in Yangzi Street, Binhai District,
people have seen the beautiful rainbow
The following is a rainbow taken by netizens in Yijuyuan Community, Jiawa Street
Rainbow is a kind of Atmospheric optical phenomena are caused by the refraction of sunlight when it passes through water droplets (raindrops) in the air. It is a joint product of sunlight and rain. As early as Tang Dynasty , ancient Chinese people pointed out: "A rainbow is the shadow of the sun in the rain, and it exists when the sun shines and rains."
If the sun rises in the east in the morning, there is weak rainfall, and there is abundant water vapor in the air, you may see a rainbow appearing in the western sky.
Schematic diagram of today's rainbow formation
However, it is not always possible to see a rainbow when there is rain and sunshine. It is easier to see a rainbow in the morning or evening after rain. This is because the rainbow appears on the other side of the sky opposite to the position of the sun, and the sunshine and There is a fixed angle between the colors seen by the naked eye.
Other conditions are suitable. When the height of the sun is low, the rainbow you see is closer to a semicircle; on the contrary, when the height of the sun rises, almost more than 40°, you will not see the rainbow on the ground.
Unless you stand higher, you have the opportunity to see a rounder...
A complete circular rainbow seen in the sky
As for the fairy tale that there is a treasure buried at the end of the rainbow, of course it is a lie, and you will never find it. Not to the end of the rainbow grounded. A rainbow is beautiful, but it is just an illusion of light. You cannot touch it, you can only truly see it.
I heard that seeing a rainbow means good luck is coming!
This wave of "good luck" is passed to him!
(local rainbow pictures provided by netizens)
