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I chose to do my report on Evangelista Torricelli The reason I chose to do him is because he is both Italian and male I am also both Italian and male which would be my connection to him Evangelista Torricelli is an Italian mathematician and physicist He was born in Faenza on October 15 1608 And died in Florence on October 25 1647 Torricelli was educated at the Jesuit College of Faenza where he showed such great aptitude for the math and sciences There he met Castelli the favorite pupil of Galileo who instructed him in the work of the laws of motion Torricelli showed his understanding by writing a thesis on the path of projectiles Castelli sent this essay in manuscript to Galileo with strong recommendations The Grand Duke prevailed upon him to remain at Florence and to succeed Galileo at the Academy There Torricelli solved some of the great mathematical problems of the day such as the finding of the area and the center of gravity of the cycloid Torricellis chief invention was the barometer Pumpmakers of the Grand Duke of Tuscany attempted to raise water to a height of forty feet or more but found that thirty-two feet was the limit to which it would rise in the suction pump Strange enough Galileo who knew all about the weight of the air had recourse to the old theory that nature abhors a vacuum modifying the law by stating that the horror extended only to about thirty-two feet Torricelli at once conceived the correct explanation He tried the experiment with quicksilver a liquid fourteen times as heavy as water expecting that the column would counterbalance the air to be proportionally smaller He filled a tube three feet long and hermetically closed at one end with mercury and set it vertically with the open end in a basin of mercury taking care that no air-bubbles should get into the tube The column of
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