SURFACE TENSION

Surface tension is a fundamental physical phenomenon occurring at the interface of a liquid and another phase, such as air, where surface molecules experience an inward pull due to unbalanced intermolecular forces. This imbalance results in a reduction of the average binding energy and a subsequent increase in the system's internal energy, causing the liquid to naturally minimize its surface area, often forming spherical shapes. This property is critically important in various systems with large surface-to-volume ratios, including colloid systems, capillary action, and gas-solid interactions. Research in this field focuses on determining the specific surface tension values of various liquids and investigating the influence of external factors—such as temperature and the addition of surface-active agents (surfactants)—on the interfacial energy.