How Everything Works on Instagram: "Pascal’s Principle — also known as the Principle of Transmission of Fluid Pressure — states that when pressure is applied to a confined fluid, it is transmitted equally and undiminished in all directions throughout the fluid and to the walls of its container. Formulated by French scientist Blaise Pascal in the 17th century, this fundamental law forms the basis of hydraulic systems used in everything from car brakes and hydraulic lifts to excavators and aircraf