# Bernoulli’s principle

Bernoulli’s principle is a fundamental principle in fluid mechanics named after the Swiss mathematician and physicist Daniel Bernoulli. It describes the relationship between the speed of a fluid and its pressure.

According to Bernoulli’s principle, as the speed of a fluid increases, its pressure decreases, and vice versa. This principle applies to all fluids, including liquids and gases.

The principle can be illustrated by considering the flow of a fluid through a pipe. If the pipe narrows, the fluid must speed up to maintain the same flow rate. According to Bernoulli’s principle, this increase in speed results in a decrease in pressure in the narrow part of the pipe. Similarly, if the pipe widens, the fluid slows down, resulting in an increase in pressure.

Bernoulli’s principle has many practical applications in engineering, including the design of airplane wings, where the curved shape of the wing causes air to move faster over the top of the wing than the bottom, resulting in lower pressure and lift. The principle is also used in the design of carburetors, which mix air and fuel to create a combustible mixture for an engine.

It should be noted that while Bernoulli’s principle is a useful tool for understanding fluid mechanics, it is only applicable in certain idealized situations and may not hold true in all real-world scenarios. More about Digital Content