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AT A GLANCE

Bernoulli’s principle in the modern world

© Alexey Kuznetsov/stock.adobe.com

Daniel Bernoulli (1700–1782) was a Swiss mathematician and physicist who published his influential book Hydrodynamica in 1738, just a few years after the death of Isaac Newton. In the book he described what has become known as the Bernoulli principle, which states that, at any point in a fluid, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure.

From Newton’s second law of motion (F = ma) it is clear that particles in a fluid will accelerate and increase speed as they move into a region of lower pressure, because the pressure difference causes a driving force.

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