Multiphase systems consist of two or more distinct phases, such as solid, liquid, and gas, that coexist within a given environment. These phases can interact with each other, influencing properties like temperature, pressure, and composition. Common examples include emulsions, foams, and suspensions, which are important in various industries, including food, pharmaceuticals, and materials science. Understanding multiphase systems is crucial for optimizing processes like chemical reactions and separation techniques. Engineers and scientists study these systems to improve product quality and efficiency, as well as to develop new materials with tailored properties for specific applications.