Pressure

Pressure (symbol p, SI unit Pascal (Pa), equal to N/m2 or kg/m·s2) is the amount of force over a given area. Pressure is equal to force over area.
:p = \frac{F}{a}
In the case of a uniform fluid, pressure is equal to
:p = \rho g h
Where ρ is the density of the fluid, g is acceleration due to gravity, and h is the height of the fluid above the point at which pressure is being determined.
Category:Fluid mechanics