Bernoulli's theorem

American  

noun

1. Statistics. law of averages.

2. Hydrodynamics. an expression of the conservation of energy in streamline flow, stating that the sum of the ratio of the pressure to the mass density, the product of the gravitational constant and the vertical height, and the square of the velocity divided by 2 are constant.

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Etymology

Origin of Bernoulli's theorem

1920–25; Bernoulli's theorem ( in def. 1 ) named after Jakob Bernoulli; Bernoulli's theorem ( in def. 2 ) named after Daniel Bernoulli

Example Sentences

See Examples For:

Bernoulli's theorem

But Bernoulli's theorem doesn't explain why that higher velocity on top of the wing lowers pressure.

From Salon ● Aug. 9, 2021

The second shortcoming of Bernoulli’s theorem is that it does not say how or why the higher velocity atop the wing brings lower pressure, rather than higher pressure, along with it.

From Scientific American ● Feb. 4, 2020

Although it is a fact of experience that air moves faster across a curved surface, Bernoulli’s theorem alone does not explain why this is so.

From Scientific American ● Feb. 4, 2020

In inverted flight, the curved wing surface becomes the bottom surface, and according to Bernoulli’s theorem, it then generates reduced pressure below the wing.

From Scientific American ● Feb. 4, 2020

Bernoulli’s theorem says that the increased speed atop the wing is associated with a region of lower pressure there, which is lift.

From Scientific American ● Feb. 4, 2020