"Hydraulic" refers to the technology that uses liquids, typically oil or water, to transmit power. This principle is based on Pascal's Law, which states that pressure applied to a confined fluid is transmitted undiminished in all directions. Hydraulic systems are commonly used in machinery, such as excavators and cranes, to lift heavy loads efficiently. In everyday life, hydraulic systems can be found in braking systems of vehicles, where fluid pressure helps to stop the car. They are also used in hydraulic presses for shaping materials and in elevators to move people between floors. These systems are valued for their strength and precision.