When the sun is exposed to sunlight, water will turn into steam, which will be connected in the air, that is, what will it become or what will it be when it meets the cold wind?

If the water vapor in the cloud is not very rich, the actual water vapor pressure is only greater than the saturated water vapor pressure on the plane, and the water vapor only condenses on the surface, then a columnar snowflake is formed; If there is a little more water vapor, the actual water vapor pressure is greater than the saturated water vapor pressure at the edge, and the water vapor will condense at the edge and surface. Because the speed of condensation is also related to the degree of bending, the place with a large degree of bending will condense faster, so the speed of condensation at the edge of ice crystals is faster than that on the surface, and more flake snowflakes will be formed at this time.

Extended data:

Snowflakes fall from the clouds to the ground, and the journey is very long. When the conditions are right, you can climb and merge many times and become very big. When it snows heavily, sometimes some goose feather-like snowflakes appear, which are formed by multiple fusion.

But sometimes snowflakes collide with each other, not combined with each other, but broken, which in turn produces some deformed snowflakes. For example, when it snows, sometimes you will see some single "stars", which is the case.

When the actual vapor pressure is only greater than the plane saturated vapor pressure, the vapor only condenses on the surface, forming columnar snowflakes.

When the actual vapor pressure is greater than the saturated vapor pressure of the edge, condensation will occur on the edge and surface. Because of the sufficient water vapor supply at the edge, the edge of the ice crystal condenses faster than the surface, forming more flake snowflakes.

When the actual water vapor pressure is greater than the saturated water vapor pressure on the corner, there are water vapor condensation on the surface, edge and corner, but the sharp corner is prominent, the water vapor supply is the most sufficient, and the condensation grows fastest, so many branches or stars are formed.

Baidu encyclopedia-snowflake

Baidu encyclopedia-rain

Baidu Encyclopedia-Long live