Venturi effect
![The pressure in the first measuring tube (1) is higher than at the second (2), and the fluid speed at](/Images/godic/202502/19/Venturifixed25015.PNG")
![A flow of air through a venturi meter, showing the columns connected in a (a manometer) and partially filled with water. The meter is](/Images/godic/202502/19/VenturiFlow5015.png")
![Flow in a Venturi tube](/Images/godic/202502/19/Venturi5015.gif")
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The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe. The Venturi effect is named after Giovanni Battista Venturi (1746–1822), an Italian physicist.
Venturi flow meter
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