Pressure is the ratio of the force distributed on a specific surface to the area. In other words, pressure is the force per unit area acting in the direction perpendicular to the surface of an object. It is also a physical quantity that represents the effect of pressure (deformation effect). In the International System of Units, the unit of pressure is Pascal, abbreviated as Pa (named in honor of the French scientist Blaise Pascal), that is, Newton/square meter. Commonly used units of pressure are kilopascal, kilogram-force/square centimeter, and torr. It is generally represented by the English letter "Pa".

The calculation formula is p=F/A, that is, pressure = pressure (vertical force)/force area

pressure:

Pressure: S = F/A

S = pressure, F = force, A = area.