Hydraulic refers to mechanisms whose movements are driven by water or fluid sources.
Hydraulics derives from the Greek hidraulikos, which referred to a type of water-driven musical organ. It is composed of the prefix hydor, which means “water”, and classrooms, which represents “flute.” The Romans subsequently use the Latin adjective hydraulicus-a-um to refer to water-driven machines.
Hydraulics is a branch of physics that studies the balance, movement and energy that fluids carry or generate.
Within hydraulics is hydraulic mechanics, which specifically studies the balance and movement of fluids.
The hydraulic energy is captured by the potential force of the waters. Hydropower is considered a renewable energy, since it regenerates naturally.
For the use of hydraulic energy it is necessary to build hydraulic wheels for smaller-scale power generation, or reservoirs to supply larger cities.
A hydraulic mechanism is one that works by the action of fluids or water such as, for example, the hydraulic suspensions of the cars, the hydraulic pumps that transform mechanical energy into hydraulics, and the hydraulic turbines that transform the energy into a rotating way.