81. Horror Vacui? - The Void Within A Void - IMSS To confirm Torricelli s experiment, blaise pascal thought up a definitive proof, in 1648. He had a barometer carried to the top of the Puy de Dôme, http://www.imss.fi.it/vuoto/eesper3.html

Institute and Museum of History of Science, Florence, ITALY The historical experiments Variations on the ordinary Torricellian tube for the experiment of the void within a void. Pascal, Traitez de l'equilibre des liqueurs, et de la pesanteur de la masse de l'air, Paris 1663 One of the decisive confirmations of the influence of atmospheric pressure was given by the so-called "void within a void" experiment, performed in 1648 in a variety of ways by Roberval Adrien Auzout Pascal , the members of the Accademia del Cimento and Robert Boyle , successively. They discovered, in fact, that if the torricellian experiment was performed within a vacuum, the mercury was not held up in the tube, but descended completely into the basin. It was observed, too, that when air was allowed back in, the mercury went back up the tube. To confirm Torricelli's experiment, Blaise Pascal thought up a definitive proof, in 1648. He had a barometer carried to the top of the Puy de Dôme, in the Massif Central in France, where the level of the column of mercury fell to a few inches lower than at normal ground level. Pascal correctly interpreted this variation as a result of the lowering of air-pressure at altitude.

82. Senior HP Fellow Robert Tarjan Wins Blaise Pascal Medal HP Senior Fellow Robert E. Tarjan has been named winner of the 2004 blaise pascal Medal in Mathematics and Computer Science for his contributions to http://www.hpl.hp.com/news/2004/apr-jun/tarjan_pascal.html

summary of site-wide JavaScript functionality United States-English Contact HP Search: HP Labs All of HP US June 2004 HP Senior Fellow wins Blaise Pasqual medal Robert Tarjan is a renowned computer scientist HP Labs Research News and events Technical reports ... Downloads HP Senior Fellow Robert E. Tarjan has been named winner of the 2004 Blaise Pascal Medal in Mathematics and Computer Science for his contributions to computer science and for the development of fundamental computer algorithms. Tarjan, who has also received the prestigious A.M. Turing Award, is a well-known expert in the design and analysis of computer algorithms. He is the inventor or co-inventor of the most efficient known algorithms and data structures for problems in a wide variety of application areas. The Blaise Pascal Medal was established by European Academy of Sciences in 2003 to recognize an outstanding and demonstrated personal contribution to science and technology and the promotion of excellence in research and education. The academy awards medals in three fields besides mathematics: natural sciences, engineering and physics. Tarjan was one of two winners of the mathematics prize.The other was Prof. Lev Kudryavtsev, a Russian mathematician who was honored for contributions to the theory of functions, topology;and mathematical education.

83. WikiAnswers - Who Was Blaise Pascal And What Did He Do blaise pascal is a famous mathematician who is famous for pascal s Triangle. He also made very important contributions to chemistry and other sciences. http://wiki.answers.com/Q/Who_was_Blaise_Pascal_and_what_did_he_do

About Browse Advanced Search How to Contribute ... Most-recent questions For Example: How do you call a girl for a date? Is there a cure for migraines? ANSW.Init(10,""); Optional Login/ Register Username Password Remember me Why Register Lost Password? Optional Login /Register Username Password Retype Password E-mail Address Send me the monthly WikiAnswers newsletter with funky questions, helpful new features and announcements. Remember me Why Register Lost Password? Related Categories History of Science Inventions Math Advertisement Who was Blaise Pascal and what did he do? Answer Pascal was most famous for Pascal's triangle. He also invented the mechanical calculator. The Pascal's Triangle is a pattern where you add the adjacent numbers from the previous line. 1 1 1 1 2 1 The 2 comes from adding 1 and 1 from the above line. 1 3 3 1 The threes come from adding 1 + 2 on the left and 2+1 on the right. 1 4 6 4 1 The 4's come from adding 3+1 on the left and on the right. The 6 comes from adding 3 and 3 in the middle. This pattern continues on and on. Blaise Pascal Blaise Pascal is a famous mathematician who is famous for Pascal's Triangle. He also made very important contributions to chemistry and other sciences.

84. The Classical Library - Blaise Pascal Etienne pascal waited to teach the children geometry until they were old enough to appreciate it; but at age 11, young blaise worked out some of Euclid s http://www.classicallibrary.org/pascal/index.htm

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