Bernoulli's Principle
The principle in fluid dynamics stating that an increase in fluid speed occurs simultaneously with a decrease in static pressure or potential energy.
Governing formula
P + ½ ρ v² + ρ g h = constant
SI unit
Pa
In depth
Conserves mechanical energy in incompressible, non-viscous, steady fluid flow along a streamline.
Examples in the real world
Lift generated by airplane wings (airfoils), venturi tube flow meters, and perfume atomizers.