Bernoulli Tube Apparatus Manufacturer,Supplier and Exporter
Product Code : SEL-PLE-10185
Quick Answer: Air blown through a pipe with a constriction shows Bernoulli's principle on this apparatus: water manometers along the pipe read lower pressure in the narrow part, where the air moves fastest, than in the wider sections.
Last updated: October 2026
Key Features
Pipe with a constriction and water manometers along its length
Connects by rubber tubing to an air supply behind the demonstration bench
Two equal-diameter sections show the pressure drop due to friction
Narrow section shows reduced pressure where air speed is greatest
About This Product
Many students expect pressure to rise where a flow is squeezed, so seeing the manometer at the narrow part read a lower pressure is a useful surprise. The apparatus also separates two effects: comparing the two sections of equal diameter shows the pressure drop due to friction, while the constriction shows the lower pressure where the air speed is greatest.
Frequently Asked Questions
What does the Bernoulli tube apparatus show apart from Bernoulli's principle?
Comparing the pressure in the two equal-diameter sections shows the pressure drop along the pipe due to friction.
How is air supplied to the apparatus?
Rubber tubing connects the pipe to an air supply behind the demonstration bench.
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