Pressure applied to an enclosed fluid is transmitted undiminished to every portion of the fluid and the walls of the containing vessel. This law was first formulated by
Pascal
Blaise Pascal (1623-1662), the French philosopher and scientist, was one of the greatest and most influential mathematicians of all time. He was also an expert in hydrostatics and postulated Pascal's law. According to Pascal law, pressure applied to an enclosed fluid is transmitted undiminished to every portion of the fluid.