Droplet coalescence

Droplet coalescence occurs when small water droplets in the air or a surface come into contact and merge to form a larger droplet. This process happens because surface forces, like surface tension, pull the droplets together, overcoming their initial resistance. Coalescence is important in nature and technology, influencing phenomena like rain formation, cloud dynamics, or the efficiency of spray coatings. Essentially, it reduces the total number of droplets, leading to larger, more stable ones, which can change the behavior of liquids in various systems.