The Venturi effect is a fluid dynamics principle that describes how the speed of a fluid increases as it passes through a constricted section of a pipe. When the fluid enters a narrower area, its velocity rises, leading to a drop in pressure. This phenomenon is commonly observed in various applications, such as in carburetors and atomizers. This effect is named after the Italian engineer Giovanni Battista Venturi, who studied the behavior of fluids in the 18th century. The Venturi effect is essential in many engineering designs, including venturi meters, which measure fluid flow rates by utilizing this principle.