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Bernoulli's Principle
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Bernoulli's Principle
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Bibliography
"Bernoulli Equation." Pressure. HyperPhysics, n.d. Web. 06 Feb. 2013. <http://hyperphysics.phy-astr.gsu.edu/hbase/pber.html>.
"Bernoulli's Principle." Infoplease. Infoplease, n.d. Web. 06 Feb. 2013. <http://www.infoplease.com/encyclopedia/science/bernoulli-principle.html>.
Wysession, Michael, David V. Frank, and Sophia Yancopoulos. "13.2 Forces and Pressure in Fluids." Prentice Hall Physical Science: Concepts in Action with Earth and Space Science. Upper Saddle River, NJ: Pearson/Prentice Hall, 2006. 394-97. Print.
by Nicholas Nagamoto
Conservation of Energy
Since pressure decreases with increasing speed, this may seem odd. However, look at it this way. If you consider pressure to be energy density, it has energy. Since more energy must be used to make the fluid move faster, it is taken from the energy in pressure.
Devices
Some devices that use Bernoulli's principle include the carburetor and atomizer, which both use air as the moving fluid, and the aspirator, which uses water. In all of these, the moving fluid is forced through a tube, creating low pressure, and a different fluid is brought into the low pressure, merging with the original fluid.
Airplanes
As air travels over airplane's wings, it moves faster than the air passing below, creating a difference in pressure. The fast air creates low-pressure and causes the wing to move up, in lift.
All about Bernoulli's principle
Bernoulli
Daniel Bernoulli was a Swiss scientist who lived from
1700-1782. According to his principle, as the speed of a moving fluid increases, the pressure decreases.