Interfacial Tension is the force of attraction between the molecules at the interface of two substances that is the tendency of an interface to become spherical to make its surface energy as low as possible. The main forces involved in interfacial tension are adhesive forces between the liquid phase of one substance and either a solid, liquid or gas phase of another substance (e.g. at the air–liquid interface is often referred to as surface tension). The interaction occurs at the surfaces of the substances involved, that is at their interfaces.
Interfacial Tension
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