Hydraulics is a branch of engineering that deals with the study and application of fluids, typically incompressible liquids like oil, to transmit and control power. It involves the use of hydraulic systems, which consist of components such as pumps, cylinders, valves, and fluid lines, to generate mechanical force and motion. Hydraulic systems are known for their ability to provide high power in compact spaces, making them widely used in various applications, including heavy machinery, construction equipment, and automotive brake systems. They operate on the principle that when pressure is applied to a confined fluid, it can transmit force and perform work, making hydraulics an essential technology for precise control and power transfer in a multitude of industries.