Bernoulli's Principle

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  • Topic: Bernoulli's principle, Fluid dynamics, Daniel Bernoulli
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  • Published : August 11, 2011
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Bernoulli's Principle is a physical phenomenon that was named after the Swiss scientist Daniel Bernoulli who lived during the eighteenth century. Bernoulli studied the relationship of the speed of a fluid and pressure. The Swiss mathematician and physicist Daniel Bernoulli (1700-1782) discovered the principle that bears his name while conducting experiments concerning an even more fundamental concept: the conservation of energy. This is a law of physics that holds that a system isolated from all outside factors maintains the same total amount of energy, though energy transformations from one form to another take place.

The principle states that "the pressure of a fluid [liquid or gas] decreases as the speed of the fluid increases." Within the same fluid (air in the example of aircraft moving through air), high-speed flow is associated with low pressure, and low-speed flow is associated with high pressure. OBJECTIVE:

*the first fly of airplane
In 1899, after Wilbur Wright had written a letter of request to the Smithsonian Institution for information about flight experiments, the Wright Brothers designed their first aircraft: a small, biplane glider flown as a kite to test their solution for controlling the craft by wing warping. Wing warping is a method of arching the wingtips slightly to control the aircraft's rolling motion and balance.

* Thursday 2 June-06-011
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Hard work paid off for 8th grade students at Morgan County Middle School as their teams placed second and third in the 1st Annual Middle Grades Wind Power Competition at Georgia College and State University today, Monday, May 9, 2011. The competition was supported by a grant from the National Science Foundation, and highlighted Science, Technology, Mathematics, and Engineering (STEM) Education.... * How cats drink: A lesson in fluid mechanics related news

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By Tom Avril Inquirer Staff Writer In the annals of animals who have contributed to science, there are Laika the Soviet space dog; Koko, the gorilla who is said to use sign language; and Lancelot, the blind dog who regained some vision after gene therapy at the University of Pennsylvania. And now, Cutta Cutta, the cat? The feline did not exactly provide a cure for cancer, but he has made something... * When airplanes fall from the sky related news

Arab News
Chris Impey | LA Times I've traveled more than five million miles by air — far enough to get to the moon and back 10 times — but I still get a sense of amazement when I'm in a fully laden 747 and we lift off. A million pounds of metal traveling at more than 200 mph, countering the force of gravity. It's a minor miracle. Which is why it is so shocking when planes fall from the sky, as happened... Chapter II:

*Archimedes' principle (Hydrostatics)
Archimedes' principle that states that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid. The principle applies to both floating and submerged bodies and to all fluids, i.e., liquids and gases. It explains not only the buoyancy of ships and other vessels in water but also the rise of a balloon in the air and the apparent loss of weight of objects underwater *Hydrodynamics

A liquid or gas flows from regions of high...
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