# Bernoulli's principle

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Related to Bernoulli's principle: Pascal's principle, Bernoulli's equation

or

## Bernoulli's law

n
(General Physics) physics the principle that in a liquid flowing through a pipe the pressure difference that accelerates the flow when the bore changes is equal to the product of half the density times the change of the square of the speed, provided friction is negligible
[C19: named after Daniel Bernoulli]
References in periodicals archive ?
The action of horizontal wind pressure across a vent is expressed in Bernoulli's principle of flow dynamics, which explains how air exhaust can induce the compression and expansion of air inside the facility.
For example, studies on student understanding of the Bernoulli's principle, which is the subject of our exploration, have shown that students find learning the content challenging due to, among other things, the counterintuitive experiences of pressure-related events observed in the real world (Stepans, 2003).
As the event was linked to science, students also studied Newton's laws and Bernoulli's principle that relates to flight.
The group has met weekly, covering a variety of STEM-focused topics such as the Scientific Method, Bernoulli's Principle, Pascal's Law, Newton's first law of motion and more.
Successfully washing the nose, clearing the tiny cilia so they can sweep effectively again, and using a law of physics called Bernoulli's principle creates the most complete daily wash possible.
Thousands of students at 195 locations participated in the record attempt, which also included a second experiment called the "Water Mister" that demonstrates Bernoulli's principle.
Bernoulli's principle is commonly cited as the reason for this: Fluid pressure is inversely related to fluid velocity--as velocity increases, pressure decreases, creating lift.
Anyway, using Bernoulli's Principle, a 35 mph wind blowing against the middle of a wall exerts a pressure of around 150 Pa.
Many readers wrote to say that the cause of lift has nothing to do with pressure differences, often ascribed to Bernoulli's principle.
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