How does small droplets turn into large droplets?

Small droplets can coalesce into larger droplets through a process called coalescence, where two or more droplets collide and merge due to surface tension. When droplets come into contact, the energy from the collision can overcome the surface tension, allowing them to combine into a single, larger droplet. This process is influenced by factors such as droplet size, ambient conditions, and the presence of surfactants, which can stabilize or destabilize the droplets. As larger droplets form, they can continue to attract smaller ones, further increasing their size.