Surface tension is a phenomenon that occurs at the interface between two materials, typically a liquid and a gas or another liquid. It is the result of the cohesive forces between the molecules in the liquid, which causes the surface of the liquid to behave as though it were under tension. This tension leads to a number of interesting properties, such as the ability of small insects to walk on water or the formation of droplets. Surface tension is an important concept in fluid mechanics and plays a role in various natural and industrial processes. Research in this area focuses on understanding the underlying mechanisms of surface tension, as well as developing practical applications in fields such as materials science, chemistry, and biology.