21. The Science Bookstore - Chronology poinsot, louis Born 1/3/1777 Died 11/5/1859, 1777 AD. 1777 AD, Components of air.1777 AD, Lavoisier, A. AntoineLaurent Lavoisier proposed idea of http://www.thesciencebookstore.com/chron.asp?pg=10

22. The 72 Names On The Eiffel Tower - Wikipedia, The Free Encyclopedia Lagrange (Joseph louis Lagrange, mathematician); Belanger ( mathematician (? Coulomb (CharlesAugustin de Coulomb, physicist); poinsot (louis poinsot, http://en.wikipedia.org/wiki/The_72_names_on_the_Eiffel_Tower

Wikimedia needs your help in the final days of its fund drive. See our fundraising page The Red Cross and other charities also need your help. The 72 names on the Eiffel Tower From Wikipedia, the free encyclopedia. On the Eiffel Tower , 72 names of French scientists, engineers and some other notable people are engraved in recognition of their contributions by Gustave Eiffel . This engraving was painted over at the beginning of the 20th century and restored in 1986-1987 by SNTE ("Soci©t© Nouvelle d'exploitation de la Tour Eiffel"), a company contracted to operate business related to the Tower (the Tower is owned by the city of Paris). Only the surnames appear on the Tower. Seguin (Marc Seguin, mechanic) Lalande (Joseph J©r´me Lefran§ais de Lalande, astronomer) Tresca (Henri Tresca, engineer and mechanic) Poncelet (Jean-Victor Poncelet, geometer) Bresse (Jacques Antoine Charles Bresse, Civil Engineer and Hydraulic Engineer) Lagrange (Joseph Louis Lagrange, mathematician) Belanger ( Jean-Baptiste-Charles-Joseph B©langer, mathematician) Cuvier (Baron Georges Leopold Chretien Fr©d©ric Dagobert Cuvier, naturalist)

23. Kepler-Poinsot Solid -- Facts, Info, And Encyclopedia Article which were described by (Click link for more info and facts about louis poinsot)louis poinsot in 1809. Some people call these the two poinsot solids. http://www.absoluteastronomy.com/encyclopedia/k/ke/kepler-poinsot_solid1.htm

Kepler-Poinsot solid [Categories: Kepler solids, Polyhedra] A Kepler solid (also called Kepler-Poinsot solid ) is a regular non- (Click link for more info and facts about convex) convex (A solid figure bounded by plane polygons or faces) polyhedron , all the faces of which are identical regular (A closed plane figure bounded by straight sides) polygon s and which has the same number of faces meeting at all its vertices (compare to (Any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent) Platonic solid s). There are four different Kepler solids: great stellated dodecahedron - 12 faces, 12 vertices, 30 edges small stellated dodecahedron - 12 faces, 12 vertices, 30 edges great dodecahedron - 12 faces, 20 vertices, 30 edges great icosahedron - 20 faces, 12 vertices, 30 edges The first two are (Click link for more info and facts about stellation) stellation s; that is, their faces are (Click link for more info and facts about concave) concave . The second two have convex faces, but each pair of faces which meet at a vertex in fact does so in two. The Kepler solids were defined by (German astronomer who first stated laws of planetary motion (1571-1630)) Johannes Kepler in 1619, when he noticed that the stellated dodecahedra (there are two, the great and the small) were composed of "hidden" dodecahedra (with pentagonal faces) that have faces composed of triangles, and thus look like stylized stars. Wentzel Jamnitzer actually found the great stellated dodecahedron and the great dodecahedron in the

24. 1809 -- Facts, Info, And Encyclopedia Article (Click link for more info and facts about louis poinsot) louis poinsot describesthe two remaining (Click link for more info and facts about Keplerpoinsot http://www.absoluteastronomy.com/encyclopedia/1/18/1809.htm

[Categories: 1809] Years: (A period of 10 years) Decades (The decade from 1770 to 1779) (The decade from 1780 to 1789) (The decade from 1790 to 1799) (Click link for more info and facts about 1800s) (Click link for more info and facts about 1810s) (The decade from 1820 to 1829) (The decade from 1830 to 1839) (Click link for more info and facts about Centuries) Centuries (Click link for more info and facts about 18th century) 18th century (Click link for more info and facts about 19th century) 19th century (Click link for more info and facts about 20th century) 20th century was a (Click link for more info and facts about common year starting on Sunday) common year starting on Sunday (see link for calendar). Events January 16 - (Click link for more info and facts about Peninsular War) Peninsular War : The (The people of Great Britain) British defeat the (The Romance language spoken in France and in countries colonized by France) French at the (Click link for more info and facts about Battle of Corunna) Battle of Corunna February 3 - (Click link for more info and facts about Illinois Territory) Illinois Territory was created.

25. LIBRIS Nyförvärvslista poinsot, louis. Éléments de statique suivis de quatre mémoires sur la compositiondes moments poinsot, louis. Précession des équinoxes / par M. Pionsot. http://www.ub.uu.se/linne/ang/jan03a.html

A Approximation Theory and its Applications Approximation Theory and its Applications. - Nanjing : Nanjing University. - 1- (1985. ISSN 1000-9221 Atti della Accademia nazionale dei Lincei. Memorie / Classe di Scienze morali, storiche e filologiche Atti della Accademia nazionale dei Lincei. Memorie / Classe di Scienze morali, storiche e filologiche. - Roma, 1876. - Ser. 3, vol. 1-13 ; Ser. 4, vol. 1-13 ; Ser. 5, vol. 1-17 ; Ser. 6, vol. 1-9 ; Ser. 7, vol. 1-4 ; Ser. 8, vol. 1-33 ; Ser. 9, vol 1. ISSN 0391-8149 B Baccelli, François Louis Elements of queueing theory : Palm Martingale calculus and stochastic recurrences / François Baccelli, Pierre Brémaud. - 2. ed. - Berlin : Springer-Vlg, 2003. - 334 s. (Applications of mathematics, 99-0108603-5 ; 26) ISBN 3-540-66088-7 Ballabio, Luigi, 1970 Calculation and measurement of the neutron emission spectrum due to thermonuclear and higher-order reactions in tokamak plasmas / by Luigi Ballabio. - Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. - 49 s. : ill. (Comprehensive summaries of Uppsala dissertations from the Faculty of Science and Technology, 1104-232X ; 797) Diss. (sammanfattning) Uppsala : Univ., 2003 ISBN 91-554-5512-3 Bartholomäi, Friedrich

26. Read About Louis Poinsot At WorldVillage Encyclopedia. Research Louis Poinsot An louis poinsot. Everything you wanted to know about louis poinsot but had no cluehow to find it.. Learn about louis poinsot here! http://encyclopedia.worldvillage.com/s/b/Louis_Poinsot

Culture Geography History Life ... WorldVillage Louis Poinsot From Wikipedia, the free encyclopedia. Louis Poinsot. Lithograph. Louis Poinsot ) was a French mathematician and physicist . Poinsot was the inventor of geometrical mechanics , showing how a system of forces acting on a rigid body could be resolved into a single force and a couple. Contents 1 Life 2 Work 3 Sources 4 External links ... edit Life "Everyone makes for himself a clear idea of the motion of a point, that is to say, of the motion of a corpuscle which one supposes to be infinitely small, and which one reduces by thought in some way to a mathematical point." Louis Poinsot, Théorie nouvelle de la rotation des corps Louis was born in Paris on January 3rd, 1777. He attended the school of Lycée Louis-le-Grand for secondary preparatory education for entrance to the famous École Polytechnique . In October 1794, at age 17, he took the École Polytechnique entrance exam and failed the algebra section but was still accepted. A student there for 2 years, he left in 1797 to study at École des Ponts et Chaussée to become a civil engineer. Although now on course for the practical and secure professional study of civil engineering, he discovered his true passion

27. Kepler-Poinsot Solids The great icosahedron and great dodecahedron were described by louis poinsot in1809, though Jamnitzer made a picture of the great dodecahedron in 1568. http://www.daviddarling.info/encyclopedia/K/Kepler-Poinsot_solids.html

Return to The Worlds of David Darling INDEX LATEST NEWS ARCHIVE ... Z entire Web this site Kepler-Poinsot solids The Four Kepler-Poinsot solids. Wenniger, Magnus J. Polyhedron Models for the Classroom . NCTM 1966. p. 11 The four regular non-convex polyhedra that exist in addition to the five regular convex polyhedra known as the Platonic solids . As with the Platonic solids, the Kepler-Poinsot solids have identical regular polygons for all their faces, and the same number of faces meet at each vertex. What is new is that we allow for a notion of "going around twice," which results in faces that intersect each other. In the great stellated dodecahedron and the small stellated dodecahedron , the faces are pentagrams (five-pointed stars). The center of each pentagram is hidden inside the polyhedron. These two polyhedra were described by Johannes Kepler in 1619, and he deserves credit for first understanding them mathematically, though a sixteenth century drawing by the Nuremberg goldsmith Wentzel Jamnitzer (1508-1585) is very similar to the former and a fifteenth century mosaic attributed to the Florentine artist Paolo Uccello (1397-1475) illustrates the latter. The

28. Universal Book Of Mathematics: List Of Entries poinsot, louis (17771859) point-set topology Poisson, Siméon Denis (1781-1840)polar coordinates Pólya’s conjecture polychoron polycube polygon http://www.daviddarling.info/works/Mathematics/mathematics_entries.html

WORLDS OF DAVID DARLING ENCYCLOPEDIA NEWS ARCHIVE ... E-MAIL THE UNIVERSAL BOOK OF MATHEMATICS From Abracadabra to Zeno's Paradoxes More details on the book Alphabetical List of Entries abacus Abbott, Edwin Abbott (1838-1926) ABC conjecture Abel, Niels Henrik (1802-1829) Abelian group abracadabra abscissa absolute absolute value absolute zero abstract algebra Abu’l Wafa (A.D. 940-998) abundant number Achilles and the Tortoise paradox. See Zeno's paradoxes Ackermann function acre acute adjacent affine geometry age puzzles and tricks Agnesi, Maria Gaetana (1718-1799) Ahmes papyrus. See Rhind papyrus Ahrens, Wilhelm Ernst Martin Georg (1872-1927) Alcuin (735-804) aleph Alexander’s horned sphere algebra algebraic curve algebraic fallacies algebraic geometry algebraic number algebraic number theory algebraic topology algorithm algorithmic complexity Alhambra aliquot part al-Khowarizmi (c.780-850) Allais paradox almost perfect number alphamagic square alphametic Altekruse puzzle alternate altitude ambiguous figure ambiguous connectivity.

29. AIP Niels Bohr Library Translate this page poinsot, louis, 1777-1859. Subjects. Statics. Browse Catalog. by author. poinsot,louis, 1777-1859. by title. Éléments de statique MARC Display http://www.aip.org/history/catalog/19370.html

If you are not immediately redirected, please click here My List - Help Browse Books Archival Resources Archival Finding Aids Photos Browse FAQs Past Searches History Home Search: Author Subject Title Journal/Newspaper Title Series Computer File (Software) Title Video Title Refine Search AIP Niels Bohr Library Item Information Holdings More by this author Poinsot, Louis, 1777-1859. Subjects Statics. Browse Catalog by author: Poinsot, Louis, 1777-1859. by title: MARC Display by Poinsot, Louis, 1777-1859. Paris : Bachelier, 1877. 1877. Call Number: N8 POI Description: 251 p. : ill. ; 21 cm. Edition: 10th ed. Copy/Holding information Location Collection Call No. Status Niels Bohr Library Books General Collection N8 POI In NBL Format: HTML Plain text Delimited Subject: Email to: Horizon Information Portal 3.0 Dynix

30. Imago Mundi - Louis Poinsot. http://www.cosmovisions.com/Poinsot.htm

Les gens Poinsot A B C D ... Z

31. The Four Regular Non-convex Polyhedra The other two were described by louis poinsot in 1809 but at least one of themappears on a drawing by the same Jamnitzer. In 1810 the French mathematician http://cage.rug.ac.be/~hs/polyhedra/keplerpoinsot.html

The four regular non-convex polyhedra Small Stellated Dodecahedron Great Stellated Dodecahedron Great Dodecahedron Great Icosahedron click on an image to enlarge... It is known that the five Platonic polyhedra are the only regular convex polyhedra. A polyhedron, considered as a solid is convex if and only if the line segment between any two points of the polyhedron belongs entirely to the solid. However, if we admit a polyhedron to be non-convex, there exist four more types of regular polyhedra! The four regular non-convex polyhedra are known as the Kepler-Poinsot Polyhedra . Two of them were described by Johannes Kepler in 1619 as being regular, although the objects themselves certainly were known earlier. One of them appears on a 16th century drawing by Jamnitzer and the other on a 15th century mosaic on the floor of the San Marco in Venice. The other two were described by Louis Poinsot in 1809 but at least one of them appears on a drawing by the same Jamnitzer. In 1810 the French mathematician Augustin-Louis Cauchy proved that the five Platonic and the four Kepler-Poinsot polyhedra are the only possible regular polyhedra. All four Kepler-Poinsot polyhedra can be constructed starting from a regular dodecahedron or icosahedron. It' my purpose to demonstrate a possible construction for each of them.

32. Louis Poinsot: Information From Answers.com Keplerpoinsot solid Information From Answers.comKepler-poinsot solid A Kepler solid (also called Kepler-poinsot solid ) is a by louis poinsot in 1809. Some people call these the two poinsot solids. http://www.answers.com/topic/louis-poinsot

showHide_TellMeAbout2('false'); Business Entertainment Games Health ... More... On this page: Wikipedia Mentioned In Or search: - The Web - Images - News - Blogs - Shopping Louis Poinsot Wikipedia Louis Poinsot Louis Poinsot. Lithograph. Louis Poinsot ) was a French mathematician and physicist . Poinsot was the inventor of geometrical mechanics , showing how a system of forces acting on a rigid body could be resolved into a single force and a couple. Life "Everyone makes for himself a clear idea of the motion of a point, that is to say, of the motion of a corpuscle which one supposes to be infinitely small, and which one reduces by thought in some way to a mathematical point." Louis Poinsot, Th©orie nouvelle de la rotation des corps Louis was born in Paris on January 3rd, 1777. He attended the school of Lyc©e Louis-le-Grand for secondary preparatory education for entrance to the famous ‰cole Polytechnique . In October 1794, at age 17, he took the ‰cole Polytechnique entrance exam and failed the algebra section but was still accepted. A student there for 2 years, he left in to study at ‰cole des Ponts et Chauss©e to become a civil engineer. Although now on course for the practical and secure professional study of civil engineering, he discovered his true passion

33. The Kepler-Poinsot Polyhedra Two centuries later, in 1809, louis poinsot discovered two more nonconvex regularsolids the great dodecahedron and the great icosahedron. http://home.comcast.net/~tpgettys/kepler.html

The Kepler-Poinsot Polyhedra A polyhedron is regular if the faces are a single kind of regular polygon and the vertices are all the same. The 5 Platonic Solids are the convex regular polyhedrons. If we remove the constraint of convexity it turns out that there are only four more solids that can be added to the list; these are known as the Kepler-Poinsot Polyhedra It was Johann Kepler who, in 1619, first realized that 12 pentagrams can be joined in pairs along their edges in two different ways that result in regular solids. If five pentagrams meet at each vertex, the resulting solid has come to be known as the small stellated dodecahedron Small Stellated Dodecahedron If three pentagrams meet at each vertex, the resulting solid is now named the great stellated dodecahedron (The perhaps surprising reason for these names will be made evident shortly). Great Stellated Dodecahedron Two centuries later, in 1809, Louis Poinsot discovered two more non-convex regular solids: the great dodecahedron and the great icosahedron . The twelve faces of the great dodecahedron are pentagons (as with the ordinary dodecahedron), but which intersect each other. Likewise, the faces of the great icosahedron are the 20 triangles of the ordinary icosahedron, but intersecting each other.

34. Kepler-Poinsot Polyhedra great icosahedron and great dodecahedron (described by louis poinsot in 1809, Together, the Platonic solids and these Keplerpoinsot polyhedra form http://www.georgehart.com/virtual-polyhedra/kepler-poinsot-info.html

The Kepler-Poinsot Polyhedra If we do not require polyhedra to be convex , we can find four more regular solids. As in the Platonic solids , these solids have identical regular polygons for all their faces, and the same number of faces meet at each vertex. What is new is that we allow for a notion of "going around twice" which results in faces which intersect each other. In the great stellated dodecahedron and the small stellated dodecahedron , the faces are pentagrams . It is easier to see which parts of the exterior belong to which pentagram if you look at a six-colored model of the great stellated dodecahedron and a six-colored model of the small stellated dodecahedron . The center of each pentagram is hidden inside the polyhedron. These two polyhedra were described by Johannes Kepler in 1619, and he deserves credit for first understanding them mathematically, but a 16th century drawing by Jamnitzer is very similar to the former and a 15th century mosaic attributed to Uccello illustrates the latter. These two polyhedra have three and five pentagrams, respectively, meeting at each vertex. Because the faces intersect each other, parts of each face are hidden by other faces, and you need to

35. Wentzel Jamnitzer's Polyhedra figure is an anticipation of the great dodecahedrona nonconvex constructionof 12 pentagons-which is usually credited to louis poinsot in 1809. http://www.georgehart.com/virtual-polyhedra/jamnitzer.html

Wentzel Jamnitzer's Polyhedra The Nuremberg goldsmith Wentzel Jamnitzer (1508-1585) is, in my opinion, one of the most creative polyhedral artists of all time. His 1568 book Perspectiva Corporum Regularium is a masterpiece of geometric design. It contains two types of plates. One type is a series of conceptual monuments such as this: The icosidodecahedron on the left above follows the style of da Vinci , but the style on the right is completely original. The freeform bases are especially interesting. No real monuments would rest on points like this, so Jamnitzer is actually displaying a kind of conceptual art. Similar balance is seen in the following pair of monuments, where the one on the right goes even further by having the outer icosahedral shape floating freely without support: These small reproductions do not show the details of the engravings. Click on this image for a clearer, larger image . The above plate is quite remarkable because the form on the left is almost exactly that of the rhombic triacontahedron , and the core of the shape on the right is almost exactly the great stellated dodecahedron . Both of these were first presented mathematically by Kepler , fifty years later, in 1619.

36. Polyhedra.mathmos.net - Kepler-Poinsot Star Polyhedra were dicovered by Johannes Kepler (15711630) and louis poinsot (1777-1859), Three of the Keplar-poinsot Star Polyhedra are the three stellations of http://polyhedra.mathmos.net/entry/keplerpoinsotstarpolyhedra.html

polyhedra.mathmos.net The Kepler-Poinsot Star Polyhedra In addition to the five convex regular polyhedra (the Platonic Solids ) there are four non-convex regular polyhedra. These four solids were dicovered by Johannes Kepler (1571-1630) and Louis Poinsot (1777-1859), and were unknown to the ancient world. Three of the Keplar-Poinsot Star Polyhedra are the three stellations of the regular dodecahedron . Namely: Small Stellated Dodecahedron Great Dodecahedron Great Stellated Dodecahedron The fourth is one of the many stellations of the icosahedron Great Icosahedron These solids' faces intersect one-another due to their 'star' faces or vertices. This shown by the fractional ' ' value in their vertex symbol s.

37. List Of Scientists By Field Translate this page poinsot, louis. poinsot, louis. Poiseuille, Jean Léonard Marie. Poiseuille, JeanLéonard Marie. Poisson, Simeon-Denis. Poisson, Simeon-Denis. Poivre, Pierre http://www.indiana.edu/~newdsb/p.html

Pacchioni, Antonio Pacini, Filippo Pacini, Filippo Pacinotti, Antonio Pacioli, Luca Pacioli, Luca Packard, Alpheus Spring Padoa, Alessandro Pagano, Giuseppe Painter, Theophilus Shickel Paley, William Palisa, Johann Palissy, Bernard Palissy, Bernard Palladin, Aleksandr Vladimirovich Palladin, Aleksandr Vladimirovich Palladin, Vladimir Ivanovich Palladin, Vladimir Ivanovich Pallas, Pyotr Simon Pallas, Pyotr Simon Palmer, Edward Pander, Christian Heinrich Pander, Christian Heinrich Paneth, Friedrich Adolf Paneth, Friedrich Adolf Pannekoek, Antonie Papaleksi, Nikolai Dmitrievich Papanicolaou, George Nicholas Papanicolaou, George Nicholas Papin, Denis Pappus of Alexandria Pappus of Alexandria Pappus of Alexandria Paracelsus, Theophrastus Philippus Aureolus Bombastus von Hohenheim Paracelsus, Theophrastus Philippus Aureolus Bombastus von Hohenheim Paracelsus, Theophrastus Philippus Aureolus Bombastus von Hohenheim Paracelsus, Theophrastus Philippus Aureolus Bombastus von Hohenheim Pardies, Ignace Gaston Parenago, Pavel Petrovich Parent, Antoine Parkhurst, John Adelbert

38. Technology/ Engineering Translate this page poinsot, louis. Poncelet, Jean Victor. Popov, Aleksandr Stepanovich. Pott, JohannHeinrich. Power, Henry. Prony, Gaspard-François-Clair- Marie Riche de http://www.indiana.edu/~newdsb/tech.html

Technology/ Engineering Agassiz, Alexander Alberti, Leone Battista Albrecht, Carl Theodor Amici, Giovan Battista Amsler, Jakob Archimedes Armstrong, Edwin Howard Ayrton, Hertha Babbage, Charles Baker, Henry Balbus Baldi, Bernardino Barkhausen, Heinrich Georg Bauer, Franz Andreas Beale, Lionel Smith Beckmann, Johann Beeckman, Isaac Bell, Alexander Graham Bellinsgauzen, Faddei F. Berger, Hans Berkner, Lloyd Viel Bernoulli, Jakob Bessemer, Henry Betancourt y Molina, Augustin de Bion, Nicolas Borelli, Giovanni Alfonso Borries, Bodo von Bossut, Charles Bour, Edmond Boussinesq, Joseph Valentin Brashman, Nikolai Dmitrievich Brinell, Johan August Brioschi, Francesco Brown, Ernest William Brunelleschi, Filippo Bunyakovsky, Viktor Yakovlevich Buono, Paolo del Bush, Vannevar Cailletet, Louis Paul Callendar, Hugh Longbourne Campani, Giuseppe Carnot, Lazare-Nicolas- Marguerite Castelli, Benedetto Castigliano, Alberto Cauchy, Augustin-Louis Chaplygin, Sergei Alekseevich Charcot, Jean-Baptiste Chardonnet, Louis-Marie- Hilaire Bernigaud Christofilos, Nicholas Constantine Clairaut, Alexis-Claude

39. Malaspina Great Books - Mary Fairfax Somerville (1780-1872) Dominique Arago (17861853), Pierre-Simon Laplace (1749-1827), SimeonPoisson (1781-1840), louis poinsot (1777-1859) and Emile Mathieu (1835-1890). http://www.malaspina.com/site/person_509.asp

Biography and Research Links: Please wait for Page to Load or Mary Fairfax Somerville (1780-1872)

40. Biografia De Poinsot, Louis Translate this page poinsot, louis. (París, 1777- id., 1859) Matemático francés. Profesor en laEscuela Politécnica y miembro de la Academia de Ciencias, http://www.biografiasyvidas.com/biografia/p/poinsot.htm

Inicio Buscador Las figuras clave de la historia Reportajes Los protagonistas de la actualidad Poinsot, Louis (París, 1777- id ., 1859) Matemático francés. Profesor en la Escuela Politécnica y miembro de la Academia de Ciencias, llevó a cabo interesantes trabajos sobre mecánica, en especial sobre el movimiento de rotación de los cuerpos sólidos. Inicio Buscador Recomendar sitio

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