Bernoulli's law

Scientific  

/ bər-no̅o̅′lēz /

1. A law of fluid mechanics stating the relationship between the velocity, density, and pressure of a fluid. Mathematically, the law states that P + 1/2 ρv ² = constant, where P is the pressure (in newtons per square meter), ρ is the density of the fluid (in kilograms per square meter), and v is the velocity (in meters per second). If no energy is added to the system, an increase in velocity is accompanied by a decrease in density and/or pressure. The law is directly related to the principle of conservation of energy.

2. See also Bernoulli effect

3. See law of large numbers

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Example Sentences

"Knowledge of Bernoulli's law, the ideal gas law, and isothermal expansion are the three ingredients we baked into a model to explore how this device worked," Lipscombe said.

From Science Daily

Stated simply, Bernoulli’s law says that the pressure of a fluid decreases as its velocity increases, and vice versa.

From Scientific American

Other companies that have reached the top appear to have been felled by Bernoulli’s law.

From New York Times

Hook, who had worked on his master’s degree in thermodynamics as a Met, was remembered for explaining Bernoulli’s Law, which describes how planes stay aloft and baseballs curve.

From New York Times

When he asked me six years ago for a copy of his Bernoulli’s Law story, he said that he didn’t want his 13 grandchildren to think he was merely a science geek.

From New York Times