1. Boulliau Portrait - Ismael Boulliau - Boulliau Home Page - Dr The most widely reproduced image of Isma l Boulliau (16051694) first appeared in print in one of the monuments of seventeenth- century http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

2. Boulliau - Ismael Boulliau Letter Project - Boulliau Home Page - Dr In addition to developing inventories of Boulliau's various archives and a comprehensive calendar of his complete correspondence, I have also http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

3. Encyclopedia Of Astronomy And Astrophysics Boulliau, Ismael Boulliau, Ismael (160594) DOI 10.1888/0333750888/3487. Published. November 2000. Full text (PDF, 19K) http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

4. Boulliau Biography - En Francais - Historiographic Biography Ismael BOULLIAU (ISMAEL), et non BOUILLAUD n Loudun, le 28 septembre 1605, voyagea en Italie, en Allemagne, en Pologne et au Levant http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

5. Boulliau Portrait Portrait of Ismael Boulliau http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

6. References For Boulliau References for the biography of Ismael Boulliau http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

7. U. Of Western Ontario /All Locations Astronomia Philolaica boulliau ismael 1605 1694. 1, De Cometis Ubi De CometarumNatura Differitur Nova Cometarum Theoria, Novissimi Cometæ Historia, http://alpha.lib.uwo.ca:5701/search/dAstronomers -- United States -- Biography./

8. Collection Boulliau An Inventory (Robert A. Hatch) Astronomy. Bibliography. Biography. Boulliau, Ismael, Catalogs. Collection Boulliau. France. History. History Of Science. Sources. Boulliau http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

9. U. Of Western Ontario /All Locations Astronomia Philolaica boulliau ismael 1605 1694, 4. Astronomical And PhysicalSociety Of Toronto Weldon, 1891? 1. Astronomical Charts See Astronomy http://alpha.lib.uwo.ca:5701/search/dAstronomers -- United States -- Biography./

Search History) SUBJECT: Copy writers (Clear Search History) (End Search Session) Search history function requires JavaScript AUTHOR TITLE SUBJECT MEDICAL SUBJECT WORD KEYWORD CALL NO Archives and Research Collections Centre (+RDL) Brescia University College Library Business Library Choral/Band/Orchestral Curriculum Resource Collection Education Library Huron University College Library King's University College Library Law Library Music Library St. Peter's Seminary Library The D. B. Weldon Library Western Libraries Information and Media Studies Int'l Centre for Olympic Studies Pride Library Electronic Resources Journals View Entire Collection Nearby SUBJECTS are: Result page: Prev Next Mark Year Entries Astronomers Television Program Taylor Astronomers United States Biography Astronomers United States Biography Juvenile Literature ASK for HELP Astronomers United States Congresses Weldon Astronomia Carolina Streete Thomas Controversial Literature Early Works To INTERNET Astronomia instavrata See De revolutionibus orbium caelestium Astronomia Philolaica Boulliau Ismael 1605 1694 Astronomical And Physical Society Of Toronto Weldon Astronomical Charts See Astronomy Charts, diagrams, etc.

10. The Galileo Project Boulliau, Ismael 1. Dates Born Loudun, 1605 Died France, 1694 Dateinfo Dates Certain Lifespan 89 2. Father http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

11. Boulliau - Ismael Boulliau Iconography - Etchings - Portraits - Boulliau Home Page Iconography M U S E B O U L L I A U. Boulliau Portrait Pieter van Schuppen {1696-1700} http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

12. Ismael Boulliau ISMAEL BOULLIAU ASTRONOMIA PHILOLAICA BOOK I - CHAPTER XII WHETHER THE SUNMOVES THE PLANETS. The solution to this problem cannot be achieved by http://www.clas.ufl.edu/users/rhatch/HIS-SCI-STUDY-GUIDE/0079_ismaelBoulliau.htm

ISMAEL BOULLIAU - ASTRONOMIA PHILOLAICA BOOK I - CHAPTER XII WHETHER THE SUN MOVES THE PLANETS T The most ingenious Kepler wanted the planets to be at rest [of their own accord] and on account of their natural inertia, but that they should be seized by solar light, as though by an agent of motive power, and thereby led round [about the Sun], as he described in chapter XXXIII of his Commentariade MotibusStellaeMartis , and in other terms in Book IV of the Epitome AstronomiaeCopernicanae, part iii, question 5: 'The Sun, in order to carry the planets around, makes use, as though they were arms, of the power of its body emitted in straight lines throughout the whole extent of the world'; and in defense of this proposition he puts forward the following reasons: The first of these reasons is that the planet is subject to a retardation during one part of its revolution, where it is, in fact, slower; but in another part it is faster. Now, it is slower where it is farther from the Sun, and faster where it is nearer the Sun. However these retardations and accelerations must not be ascribed to the motive power of the planet, for in that case, it would tire and weaken with time. The second adds [the consideration drawn] from the motion of planets compared among themselves: they complete their orbit more slowly when they are more distant from the Sun, and more quickly when closer.

13. Università Di Bologna - Archivio Storico - Quadreria Dell'Università - Soggett boulliau ismael BOVIO GIULIO BOYLE ROBERT BRACCIOLINI FRANCESCO http://www.archiviostorico.unibo.it/template/listQuadreria.asp?IDFolder=311&LN=I

14. Boulliau - Ismael Boulliau Sr (1583-1625) - Father Of The Astronomer, Ismael Bou The opening illustration is a presumed likeness of Ismaël boulliau, MN Chauvineauhas suggested the portrait reads M. Ismaël boulliau Laisné, http://web.clas.ufl.edu/users/rhatch/pages/11-ResearchProjects/boulliau/iconogra

C W e (1645), which has been called the most important book in astronomy between Kepler and Newton. But the observations, as every reader understood, were not recorded for their quality or importance. Evidence suggests young Boulliau took pride in having learned astronomy from his father and at such an early age. As Jacques de Valois later wrote to Marin Mersenne, the new astronomer in Paris was a 'very learned man, curious and diligent, who had carried astronomy in his head since the cradle.' A Gazette de France), I T he Boulliau family appears to have included nearly a dozen children, most dying in childhood. For a sketch of Boulliau's life and career, see Robert A. Hatch, The Collection Boulliau (f.fr. 13019 - 13059): An inventory , American Philosophical Society, 1982 (lxxiv + 599 pp). T rah.march.98 et seq BACK - HOME

15. Boulliau - Ismael Boulliau Letter Project - Boulliau Home Page - Dr Robert A. Ha Ismaël boulliau to Marin Mersenne Rome Paris, 16 December 1644 Original BNParis, Naf 6205, 228231 f 112r-113r, ad.v; MC 13 267-274 http://web.clas.ufl.edu/users/rhatch/pages/11-ResearchProjects/boulliau/06rp-b-l

Boulliau Correspondence, the Boulliau Letter Project b o u l l i a u l e t t e r p r o j e c t I consistent difficulty and common delight in Boulliau's writings. Paris, 16 December 1644 Original: BN Paris, N.a.f. 6205, 228-231 [f 112r-113r, ad.v]; MC 13: 267-274 Paris, 16 December 1644. The Reverend Father of our Lord Y ou took time to write me from Toulon last month - I am grateful for the favor. It is true your letter excited a spirit of compassion, knowing you were burdened with the fatigue of travel, subject to the inconstancy and fury of the winds. I had and still retain great concern for you which persisted until I was advised that you arrived at Rome in good health. We must hear upon your return how one should undertake such a voyage, and in what manner it is necessary to conduct oneself, and you must leave out no reflections regarding your encounters and chance happenings. I must tell you I have had the same desire as you to see Rome and Italy, and if the state of affairs of M. de Gremonville and his partner had permitted, I would have made the voyage with him. He diverted me saying Madame, his wife, was going to undertake a voyage to Rome or Venice next spring. If you and I could meet it would be great consolation. T he Philolaic Astronomy is finally complete, but I have a quarrel on my hands, as Jean-Baptiste Morin, the Prince - according to his own views - of the whole of Astronomy, has come across something not to his advantage or liking. The simple suggestion I put to him should make him wiser and more reserved in making injurious statements against someone who has never made such cruel remarks, and who has never offended him. You can see, it seems to me, how I turned the crab on his back, at the first opportunity you give him some respectable advice to follow, should he not wish for anything worse to follow. However, I was careful with him because, notwithstanding my character and profession, I am upset by the very sight of him. If he approached me in attack I would defend myself as necessary.

16. Encyclopedia Of Astronomy And Astrophysics » Boulliau, Ismael (1605–94) boulliau, ismael (1605–94). DOI 10.1888/0333750888/3487; Published November 2000.Icon Full text (PDF, 19K). Article summary http://eaa.iop.org/index.cfm?action=summary&doc=eaa/3487@eaa-xml

17. Encyclopedia Of Astronomy And Astrophysics » Browse By Title Article boulliau, ismael (1605–94); Published November 2000; SummaryMathematician, librarian, priest, born in Loudun, France. http://eaa.iop.org/index.cfm?action=browse.home&type=ti&dir=B/BO

18. Boulliau Biography of ismael boulliau (16051694) ismael boulliau studied in Loudun,then went to Paris where he studied philosophy, later studying law in http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Boulliau.html

Ismael Boulliau Born: 28 Sept 1605 in Loudun, France Died: 25 Nov 1694 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 Ismael Boulliau studied in Loudun, then went to Paris where he studied philosophy, later studying law in Poitiers. Boulliau was ordained in 1630, becoming a vicar in a parish including Loudun. He held this position for about three years when he went to Paris. There he became a librarian working for the keepers of the Royal Library. Boulliau was a friend of Pascal Mersenne and Gassendi and supported Galileo and Copernicus . In 1645 he published Astronomia philolaica which accepts elliptical orbits for planets. He claimed that if a planetary moving force existed then it should vary inversely as the square of the distance (Kepler had claimed the first power). It represents the most significant treatise between Kepler and Newton and it was praised by Newton in his Principia , particularly for the inverse square hypothesis and its accurate tables.

19. Boulliau Portrait Portrait of ismael boulliau. The URL of this page is, © Copyright information.http//wwwhistory.mcs.st-andrews.ac.uk/PictDisplay/boulliau.html. http://www-groups.dcs.st-and.ac.uk/~history/PictDisplay/Boulliau.html

Ismael Boulliau JOC/EFR September 2003 The URL of this page is: http://www-history.mcs.st-andrews.ac.uk/PictDisplay/Boulliau.html

20. Scientific Identity: Portraits From The Dibner Library Of The History Of Science Scientist, boulliau, ismael (1605 1694). Discipline(s), Astronomy ; Mathematics Portrait of ismael boulliau ~ Enlarge Image ~ http://www.sil.si.edu/digitalcollections/hst/scientific-identity/CF/by_name_disp

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