Make your own free website on

Pascal's Principle

Blaise Pascal contributes again to science.  He discovered that fluids evenly distributes a pressure that is applied to it.  This is the reason why one could use a fluid to do work.  An example would be how a hydraulic cylinder works and how we use it.  Hydraulics work because fluid is applied to a moveable piston in a metal sleeve.  A pump applies a pressure to the fluid which is then evenly distributed to the piston.  The pressure of the fluid pushed the cylinder out.  Hydraulic cylinders are used to lift front end loaders on tractors and heavy equipment, dump trucks and many other applications. 

One can calculate the pressure applied to a piston by using the formula: P = F/A.  Where P = Pressure kPa
           F = Force N
          A = Area