What season is dewdrop crystal clear?

The dew crystal is autumn. Dewdrops are water droplets that condense near the ground at night or early morning, become small ice crystals, and then melt on objects. The temperature difference between day and night in spring and autumn is relatively large, which may be very hot during the day and very cold at night, which is very conducive to the formation of dew. Especially in autumn, there are many dewdrops, so dewdrops are usually used to refer to autumn. Millennium is a solar term, named after the dew in autumn.

What is dew:

Dew is rain that falls on leaves, flowers and grass. The reason and process of condensation are the same as frost, but the temperature is above 0℃, which is shiny, transparent and round.

The formation process of dew:

Dew is formed because hot air is saturated when it meets an object with low temperature and condenses into small water droplets to stay on the object. Above 0℃, the temperature at which air is saturated with water vapor due to cooling is called "dew point temperature". In warm seasons, when the ground objects are cooled by intense radiation at night, the temperature of the air in contact with the surface of the objects drops. After it drops to the "dew point", there will be excess water vapor precipitation. Because the temperature is above 0℃ at this time, these excess water vapor condenses into water droplets and adheres to ground objects, which is dew.

Dew usually forms at night. After sunrise, the temperature rises, the dew evaporates and disappears, and it exists briefly.