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Bernoullis Principle Daniel Bernoulli a Swiss scientist stated that fast moving air results in lower pressure than slow moving air Which means high pressure air always moves towards a lower pressure area The force of the moving air is called lift If this principle had not been discovered airplanes may not even be here Lift pushing up on an airplanes wing is the way airplanes stay in the air The shortest distance between two points is a straight line The bottom of the wing is flat so the air can travel across there without having to speed up to get past the wing The top of the wing is curved causing the air to speed up to pass because high pressure always moves toward low pressure Small things can affect the lift The surface area of the wing the larger the wing the more lift is created Speed can too the faster the air is moving the more time vacuums have to form causing them to have more powerful lift Lift can be demonstrated by taking a thin piece of paper and blowing lightly over the top of it The blowing creates the low pressure and makes the paper appear to float in the air The uses that have come out of this are huge One day Wilbur Wright was looking at this principle and he said to his brother I can make something fly Then he and Orville Wright went out and built a plane and they were the first to fly If they had not known of Bernoullis principle to build a plane we might not have any planes now In conclusion Bernoullis principle summarizes the findings of the eighteenth century scientist Daniel Bernoulli who investigated and described aspects of the behavior of moving fluids We know how gliders and airplanes fly because of his principle
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