Hydraulics is a branch of engineering that deals with the mechanical properties of liquids, with a focus on the behavior and use of fluids in engineering systems. This area of research involves the study of how liquids such as water, oil, and other fluids move and interact in systems such as pipes, pumps, and valves. Hydraulics is commonly used in a wide range of applications, including in the design of hydraulic systems for machinery, construction equipment, and transportation vehicles, as well as in water and sewage systems, dams, and power plants. Researchers in this field focus on understanding the principles of fluid mechanics and applying them to the design, analysis, and optimization of hydraulic systems for various industrial, civil, and environmental engineering applications.