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

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

For these reasons, Newton’s third law is a more universal and comprehensive explanation of lift than Bernoulli’s theorem.

From Scientific American • Feb. 4, 2020

This means that Bernoulli’s theorem alone is insufficient to explain these facts.

From Scientific American • Feb. 4, 2020

Physics teachers point to Bernoulli's theorem and Newton's third law of motion, yet each fails to give a comprehensive account of the dynamics at play.

From Scientific American • Jan. 14, 2020