 Pressure gradient

The pressure gradient is the vector $\nabla p$ pointing in the direction of fastest pressure increase. The force density exerted by pressure on a continuum is $-\nabla p$.

A pressure gradient refers to the rate of change of pressure in a fluid (which can be a liquid or gas) over a specific distance. In simpler terms, it indicates how pressure varies from one point to another within a given space. The pressure gradient is a critical concept in various fields, including meteorology, fluid dynamics, and engineering.