An ancient poem about missing your lover on a rainy day is as follows:
The wind blows through the window and the raindrops twirl the muffled mustache. Where is the road to the west of Huaiyang? No one came and asked the pole master about the wine.
A rainy day is introduced as follows:
A rainy day refers to a day when it rains. Raining is a natural phenomenon. It mainly refers to the fact that after the water on the earth is exposed to sunlight, it becomes The water vapor is evaporated into the air. When water vapor encounters cold air at high altitudes, it condenses into small water droplets, which are held up in the air by the updrafts in the air and form clouds in the sky. These small water droplets fall from the clouds and fall to the ground as raindrops.
The introduction to rainy days is as follows:
After the earth is heated (such as sunlight), it turns into water vapor and evaporates into the air. Water vapor condenses into small water droplets when it encounters cold air at high altitudes. These small water droplets are very small, only 0.01 to 0.02 mm in diameter, and the largest is only 0.2 mm. They are small and light, held aloft by updrafts in the air. It is these small water droplets that gather into clouds in the sky.
For these small water droplets to turn into raindrops and fall to the ground, their volume will increase by about 1 million times. How do these small water droplets increase their size to more than 1 million times? It mainly relies on two means, one is condensation and sublimation increase. The second is to rely on the collision and growth of cloud droplets.
In the early stages of raindrop formation, cloud droplets mainly rely on continuously absorbing water vapor around the cloud body to condense and sublimate themselves. If the water vapor energy source in the cloud body is continuously supplied and replenished, so that the surface of the cloud droplets is often in a supersaturated state, then this condensation process will continue, causing the cloud droplets to continue to grow and become raindrops.
The characteristics of rainy days are introduced as follows:
But sometimes the water vapor content in the cloud is limited. In the same cloud, the water vapor is often in short supply, so it is impossible to make every cloud droplet Increased into larger raindrops, some smaller cloud droplets had to merge into larger cloud droplets. If water droplets and ice crystals exist in the cloud, the condensation and sublimation growth process will be greatly accelerated.