How do dewdrops form on vegetable leaves? Why are you waiting in line?

On days when the temperature is high during the day, the temperature will drop at night. At this time, the moisture in the air will condense when it is cold. After water vapor condenses on plant leaves to a certain extent, it will flow to prominent parts such as leaf tips to form dew. The edge of the blade is uneven and has great tension, which not only has a large contact area with air, but also is beneficial to water vapor condensation. So the dew condenses on the edge of the leaf and is arranged around the edge of the leaf, which looks like a queue attached to the edge of the leaf. Dew is usually dirtier than ordinary water because it mixes pollutants in the air with dust on the leaves.