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  1. The Barometer By: Paul Karkenny

  2. Timeline of the Barometer 1643- Mercury barometer invented 1843- Aneroid barometer is invented 1648- Pascal performs his famous experiment

  3. Evangelista Torricelli • Born in 1608 • German Physicist • Invented first barometer • Died in 1647

  4. Creation of the barometer • Invented by Evangelista Torricelli in 1643 • Disproving tradition • Why Mercury? • Torricelli’s barometer

  5. Creation of the barometer • In 1648, Pascal proves relationship between atmospheric pressure and altitude. • In 1843, the French scientist Lucien Vidie invented the aneroid barometer.

  6. How does it work? • Measures atmospheric air pressure • Mercury Barometer

  7. How does it work? • Aneroid Barometer

  8. Importance in modern world • Weather forecasting • Storm Chasers • Pressure Maps • Flying aircraft

  9. Works Cited • "Aneroid Barometer." Your Guide to the Selection, Set Up and Enjoyment of Home Weather Stations. Web. 19 Nov. 2010. <http://www.home-weather-stations-guide.com/aneroid- barometer.html>. • "Barometer — Infoplease.com." Infoplease: Encyclopedia, Almanac, Atlas, Biographies, Dictionary, Thesaurus. Free Online Reference, Research & Homework Help. — Infoplease.com. Web. 19 Nov. 2010. <http://www.infoplease.com/ce6/sci/A0806263.html>. • "Evangelista Torricelli: The Invention of the Barometer." The Orchid Grower: A Juvenile Science Adventure Novel. Web. 19 Nov. 2010. <http://www.juliantrubin.com/bigten/torricellibarometer.html>. • "How Does a Barometer Work? How Aneroid and Torricellian Barometers Measure Air Pressure." Explain That Stuff! Science and Technology Made Simple. Web. 19 Nov. 2010. <http://www.explainthatstuff.com/barometers.html>.