Explain Pascal's law of pressure transmission.

(N/A) Pascal's law of pressure transmission states: "The pressure in a fluid at rest is the same at all points which are at the same height. $A$ change in pressure applied to an enclosed fluid is transmitted undiminished to every point of the fluid and the walls of the containing vessel."
Consider a vessel with a piston and several vertical tubes at different points. The pressure in the vessel is indicated by the height of the liquid column in the vertical tubes.
When the piston is pushed, the fluid level rises in all the tubes, reaching the same level in each of them.
This indicates that when the pressure on the fluid was increased, it was distributed uniformly throughout the entire volume.
Many devices are based on this law, such as door closers, hydraulic brakes, hydraulic lifts, and shock absorbers in vehicles.