👉 In physics, a process that involves the movement and interaction of particles in fluids (liquids or gases) with respect to their motion. This includes both the internal motions of fluid molecules, as well as the interactions between these molecules. The aim is to understand how these processes affect the properties of fluids, such as viscosity, density, and temperature. For example, hydrodynamics can be studied in various fields like aerodynamics, oceanography, meteorology, and environmental science. It involves not only