Daniel Bernoulli
Many times I have found myself watching a baseball game and wondering, “Why does the ball curve?” I have also questioned why airplanes can fly; now I know. An eighteenth century scientist, named Daniel Bernoulli, devised Bernoulli’s Principle. He discovered that as the speed of a fluid increases, the pressure decreases. A fluid can be either a liquid or a gas, such as air. This is why airplane wings are designed flat on the bottom, and curved across the top. The air going over the top of the wing must move much faster to keep up with the air beneath the wing. Thus, the pressure above the wing is lower, so the airplane takes flight. This is how airplanes are able to fly. I have observed that when driving, semi-trucks seem to pull my car towards them. This is due to Bernoulli’s Principle. The air trapped between our vehicles is moving so fast, that it decreases the pressure enough to attract my car to the semi. I have learned that riding behind a semi is a way to save gas. I can put my car in neutral and allow the semi’s air pressure power my motio
Bernoulli’s advances to the kinetic theory of gases seemed radical at the time, but now science has proved that he was essentially correct. Some scientists completely dismissed his beliefs and refer to him as a madman. He thought that when water was boiled, that molecules were actually breaking apart due to the intense heat and turning into a gas. Furthermore, he thought that the temperature of a gas could be determined by the mean kinetic energy of that gas. He suggested that the greater the motion of the molecules, the higher the temperature. The pressure exerted by each individual gas particle is due to the linear momentum of the molecule. Gas particles are allowed to move completely at random, whereas solid molecules must remain almost constant. When gas particles are mixed with solid molecules, then put in a pilot tube to have their pressure taken, this is called the static pressure. The pressure produced by the random molecules plus the ordered particles equate the total pressure. Bernoulli had many great developments and improved countless theories. Daniel surpassed his fa
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Approximate Word count = 741
Approximate Pages = 3 (250 words per page double spaced)
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