Bernoulli's theorem

WordReference Random House Unabridged Dictionary of American English © 2025

Bernoul′li's the′orem, 

1. Statistics See law of averages (def. 1).
2. Hydraulics 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.
• 1920–25; (in def. 1) named after Jakob Bernoulli; (in def. 2) named after Daniel Bernoulli