A cloud in the sky is equivalent to the weight of hundreds of elephants. Why not pour it?

Humans have never stopped exploring the unknown since ancient times. From the pre-Qin emperors to the present, people have been exploring progress again and again. After successfully building the plane, they found many mysteries in the sky. For example, the weight of a cloud in the sky is equivalent to hundreds of elephants, but there are still water molecules because its falling speed follows the terminal speed.

First, we can check the terminal speed online. In fact, it means that any particle is not disturbed by other particles in the process of falling. In the isokinetic stage, the speed of particles relative to the fluid causes the clouds in the sky to be heavy, but they will not fall. In fact, it is equivalent to keeping relatively still with the sky, and the speed and acceleration are the same.

We all know that the composition of clouds is actually water, so it will rain in the sky. When clouds evaporate into water droplets, they are very small, including light weight. At first, the initial speed of falling is very slow, and the falling process is also disturbed by air resistance and other dust molecules, which will float back to the sky and slowly condense into clouds, so that we can't see clouds unless it rains. In other cases, basically, clouds just evaporate and fall, and float back to condense into clouds.

Moreover, it should be noted that water droplets will evaporate during the falling process, which is why water droplets will still appear on the plane even in a clear sky. In fact, it is the evaporation of clouds that leads to the appearance of water droplets, and then the water droplets evaporate again. But after evaporation, the falling speed is very slow, and it evaporates into water molecules before it falls to the ground. Due to the great reduction of weight and density, it floats in the air and finally condenses back to a part of the clouds.