Hydraulics

The word "hydraulics" comes from the Greek word ὑδϱαυλικός (hydraulikos) which in turn comes from ὕδϱαυλος meaning water organ[?] which in turn comes from ὕδωϱ (water) and αὐλός (pipe).

Typically, the fluid used in a hydraulic system is an incompressible liquid such as water or oil. Pressure is applied by a piston to fluid in a rigid vessel, causing the fluid to press on another piston that delivers energy to a load. If the areas of the two pistons are different, then the force applied to the first piston will be different from the force exerted by the second piston. This creates a mechanical advantage.

Sub-topics

• fluidics[?] (hydraulic systems used for control and information processing)
• hydraulic ram
• piston
• hydroelectricity
• hydraulic jack[?]
• Hydraulics Demo A simple school demonstration to show the basic principles.
• Hydraulic fluid