1. La Hire, Philippe De Philippe de la Hire. Mathematician, astronomer, physicist, naturalist, and painter, b. in Paris, 18 March, 1640; d. in Paris, 21 April, 1718; http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

2. The Galileo Project This catalog is a collection of 631 detailed biographies on members of the scientific community during the 16th and 17th centuries with vital facts http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

3. Biografia De Hire, Philippe De La Reportajes. Los protagonistas de la actualidad. Hire, Philippe de La (Par s, 1640 id., 1718) Matem tico franc s. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

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6. Enciclopedia Cat Lica de La Fontaine, Jean de La Fosse, Charles de La Harpe, JeanFran ois La Haye, Jean de La Hire, Philippe de La Luzerne, C sar-Guillaume La http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

7. La Hire Philippe De 18 March 1640-21 April 1718 Astronomer And La Hire Philippe de 18 March 164021 April 1718 astronomer and mathematician. Solutio Probl http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

8. Philippe De La Hire Philippe de la Hire http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

9. De Lahire Philippe De La Hire I (16401718) was the son of Laurent De La Hire, a founder and La première oeuvre géométrique de Philippe de la Hire, Revue http://kmoddl.library.cornell.edu/biographies/De_la_Hire/index.php

De La Hire Biographical Information: In mechanics, the shape of a gear tooth is vitally important to the way it transfers the driving power from tooth to tooth, from gear to gear, and ultimately to the rest of the machine. During the brief tooth contact experienced when two gears meet, the curved surfaces actually roll together like two wheels. Thus the tooth rolling action of gear teeth is essentially the same as two wheels that are in continuous contact. And just as one pair of teeth completes their contact, the next pair takes over, creating uniform pressure and motion. Known as the “involute curve,” this epicycloidal profile for gear teeth provides a rolling action rather than a rubbing action, and is Philippe I’s greatest contribution to mechanics. Sources for Further Information on the De Lahire Family: Carl B. Boyer. "Note on Epicycles & the Ellipse from Copernicus to Lahire." Isis , Vol. 38 No. 1/2 (Nov., 1947), pp. 54-56. Daumas, M. (ed). Histoire générale des techniques . V.2 (Paris, 1964), 285-6, 540-1.

10. Philippe De La Hire Philippe de la hire philippe de la Hire (or Lahire), French mathematician, was born in Paris on March 18, 1640, and died there on April 21, 1719 http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

11. Encyclopedia Philippe De La Hire Encyclopedia Philippe de la Hire Updated 31 days 6 hours 59 minutes ago. Other descriptions of Philippe de la Hire http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

12. Philippe De La Hire - Wikipedia, The Free Encyclopedia Philippe de la Hire (or Lahire or Phillipe de La Hire), French mathematician andastronomer, was born in Paris on March 18, 1640, and died there on April 21 http://en.wikipedia.org/wiki/Philippe_de_la_Hire

Wikimedia needs your help in its 21-day fund drive. See our fundraising page Over US$155,000 has been donated since the drive began on 19 August. Thank you for your generosity! Philippe de la Hire From Wikipedia, the free encyclopedia. Philippe de la Hire (or Lahire or Phillipe de La Hire French mathematician and astronomer , was born in Paris on March 18 , and died there on April 21 . He wrote on graphical methods, 1673; on the conic sections , 1685; a treatise on epicycloids , 1694; one on roulettes , 1702; and, lastly, another on conchoids , 1708. His works on conic sections and epicycloids were founded on the teaching of Desargues , whose favourite pupil he was. He also translated the essay of Manuel Moschopulus on magic squares , and collected many of the theorems on them which were previously known; this was published in 1705. He also published a set of astronomical tables in 1702. This text incorporates public domain material from Rouse History of Mathematics This biographical article is a stub . You can help by expanding it Retrieved from " http://en.wikipedia.org/wiki/Philippe_de_la_Hire

13. Glaucoma Et Cataracte 1705-1708 Translate this page Suite à cette lecture, le physicien Philippe de La Hire prit la défense des positions de la hire philippe de la Hire 17 février 1706 Registre des pv p. http://www.snof.org/histoire/glaucoma.html

Accueil Annonces Art Histoire ... Ecrivez-nous 1709 p. 33-94 Page 1 Page 2 Page 3 Robert HEITZ, Strasbourg Rev jmm Introduction cataracte glaucoma Pierre Brisseau 18 novembre 1705 Registre des p-v p. 349 verso Dodart et Antoine Lettre d'Antoine Maitre-Jan Philippe de La Hire Philippe de La Hire Page 1 Page 2 Page 3

14. CATHOLIC ENCYCLOPEDIA: Philippe De La Hire Visit New Advent for the Summa Theologica, Church Fathers, Catholic Encyclopediaand more. http://www.newadvent.org/cathen/08742b.htm

Home Encyclopedia Summa Fathers ... L > Philippe de la Hire A B C D ... Z Philippe de la Hire Mathematician, astronomer, physicist, naturalist, and painter, b. in Paris, 18 March, 1640; d. in Paris, 21 April, 1718; was, as Fontenelle said, an academy in himself. His father, Laurent de La Hire, (1606-1656), was a distinguished artist. Philippe first studied painting in Rome, where he had gone for his health in 1660, but on his return to Paris, soon devoted himself to the classics and to science. He showed particular aptitude for mathematics, in which subject he was successively the pupil and associate in original investigation of Desargues. In 1678, he was made a member of the Academy of Sciences, section of astronomy. Beginning in 1679, in connexion with the construction of a map for the Government, he made extended observations in Brittany, Guienne, Calais, Dunkirk, and Provence. In 1683, he continued the principal meridian north from Paris, Cassini The chief contributions of La Hire were in the department of pure geometry. Although familiar with the analytic method of Descartes , which he followed in treatises published in 1679, his most important works were developed in the method of the ancients. He continued the work of Desargues and of

15. La_Hire Biography of philippe de la hire (16401718) philippe de la hire was educatedas an artist and became skilled in drawing and painting. http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/La_Hire.html

Philippe de La Hire Born: 18 March 1640 in Paris, France Died: 21 April 1718 in Paris, France Click the picture above to see a larger version Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Version for printing Philippe de la Hire was educated as an artist and became skilled in drawing and painting. He visited Italy where he spent four years developing his artistic skills and learning geometry. The interest in geometry arose from his study of perspective in art. La Hire was elected to the Much influenced by the work of Desargues , La Hire worked on conic sections which he treated projectively. He published his first work on conic sections in 1673. In 1675 he published a more comprehensive work on conic sections Sectiones conicae which contained a description of Desargues projective geometry . In 1708 he calculated the length of the cardioid. Other topics to which he made important contributions included astronomy, physics and geodesy. In astronomy he installed the first transit instrument in the Paris Observatory. He also produced tables giving the movements of the Sun, Moon and the planets.

16. References For La_Hire References for the biography of philippe de la hire. R Taton, la premièreoeuvre géométrique de philippe de la hire, Rev. Hist. Sci. http://www-groups.dcs.st-and.ac.uk/~history/References/La_Hire.html

References for Philippe de la Hire Version for printing Biography in Dictionary of Scientific Biography (New York 1970-1990). Articles: A Buti and M Corradi, The contributions of a 17th century mathematician to an architectural problem : Philippe de la Hire and the statics of arches (Italian), Atti Accad. Ligure Sci. Lett. B de Fontenelle, (Paris, 1818), 257-266. Rev. Hist. Sci. Appl. Revue d'histoire des sciences Main index Birthplace Maps Biographies Index History Topics ... Anniversaries for the year JOC/EFR December 1996 School of Mathematics and Statistics University of St Andrews, Scotland The URL of this page is: http://www-history.mcs.st-andrews.ac.uk/References/La_Hire.html

17. Philippe De La Hire Mathematicians Mathematics Science All about philippe de la hire Mathematicians Mathematics Science. http://infotut.com/reference/Science/Mathematics/Mathematicians/de_la_Hire,_Phil

Encyclopedia Music Library Music Message Board Geography ... Mathematicians : de la Hire, Philippe Biography Philippe De la Hire (or Lahire), born in Paris on March 18, 1640, and died there on April 21, 1719, wrote on graphical methods, 1673; on the conic sections, 1685; a treatise on epicycloids, 1694; one on roulettes, 1702; and, lastly, another on conchoids, 1708. His works on conic sections and epicycloids were founded on the teaching of Desargues, whose favourite pupil he was. He also translated the essay of Moschopulus on magic squares, and collected many of the theorems on them which were previously known; this was published in 1705. This category needs an editor - apply here Open Site - Encyclopedia Project Open Site Become an Editor Hot Albums XandY Emancipation of Mimi In Your Honor Monkey Business ... Kids var site="s20infotut"

18. Science: Mathematics: Mathematicians: De La Hire, Philippe - Open Site Science Mathematics Mathematicians de la hire, philippe Open Site. http://open-site.org/Science/Mathematics/Mathematicians/de_la_Hire,_Philippe/

Open Site The Open Encyclopedia Project home submit content become an editor the entire directory only in Mathematicians/de_la_Hire,_Philippe Top Science Mathematics Mathematicians : de la Hire, Philippe Biography Philippe De la Hire (or Lahire), born in Paris on March 18, 1640, and died there on April 21, 1719, wrote on graphical methods, 1673; on the conic sections, 1685; a treatise on epicycloids, 1694; one on roulettes, 1702; and, lastly, another on conchoids, 1708. His works on conic sections and epicycloids were founded on the teaching of Desargues, whose favourite pupil he was. He also translated the essay of Moschopulus on magic squares, and collected many of the theorems on them which were previously known; this was published in 1705. This category needs an editor - apply here Open Site Code 0.5.3 robot company. Visit our sister sites dmoz.org mozilla.org chefmoz.org musicmoz.org ... edit

19. Encyclopedia Of Astronomy And Astrophysics » La Hire, Philippe De [Philippe I] la hire, philippe de philippe I (1640–1718) and la hire, Gabrielphilippede philippe II (1677–19). DOI 10.1888/0333750888/3783; Published November http://eaa.iop.org/index.cfm?action=summary&doc=eaa/3783@eaa-xml

20. Encyclopedia Of Astronomy And Astrophysics » Browse By Title Article la hire, philippe de philippe I (1640–1718) and la hire, Gabrielphilippede philippe II (1677–19); Published November 2000 http://eaa.iop.org/index.cfm?action=browse.home&type=ti&dir=L

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