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Bernoulli's principle
(redirected from Bernoulli effect)

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Bernoulli's principle
[bərno̅o̅′lēz]
Etymology: Daniel Bernoulli, Swiss scientist, 1700-1782
(in physics) the principle stating that the sum of the velocity and the kinetic energy of a fluid flowing through a tube is constant. The greater the velocity, the less the lateral pressure on the wall of the tube. Thus, if an artery is narrowed by atherosclerotic plaque, the flow of blood through the constriction increases in velocity and decreases in lateral pressure. Also called Bernoulli's law.


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The narrowing of the nostrils results in greater air velocity during inspiration, which magnifies the Bernoulli effect and makes the lateral nasal wall more prone to collapse.
The PBS video Flight (part of the series from Bill Nye the Science Guy, available from Disney Educational Productions) is used to show the different forces of flight (lift, thrust, drag, gravity, the Bernoulli effect, differences in air pressure, etc.
The Bernoulli effect says it is this spin which creates the low-pressure force that turns the ball to the left ( round the defensive wall.
 
 
 
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