21. Schooten frans van schooten. Born 1615 in Leiden, Netherlands Died 29 May 1660in Leiden, Netherlands. A page from a work by frans van schooten http://intranet.woodvillehs.sa.edu.au/pages/resources/maths/History/Schtn.htm

Frans van Schooten Born: 1615 in Leiden, Netherlands Died: 29 May 1660 in Leiden, Netherlands Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Welcome page Frans van Schooten should not be confused with his father, Frans van Schooten (the elder), who was professor at the engineering school in Leiden. He enrolled at the University of Leiden in 1631 and he studied mathematics there. In 1637 Descartes visited Leiden and met van Schooten. This proved important for van Schooten since Descartes provided contacts for van Schooten to become acquainted with Mersenne 's circle in Paris. Some time after this he went abroad, travelling first to Paris and then to London where he stayed from 1641 to 1643. He discussed mathematics in these two centres and he continued to correspond with the mathematicians he met in these towns after his return to Leiden, but unfortunately this correspondence is now lost. While in Paris he obtained manuscripts 's work and he later published them in Leiden. In 1643 van Schooten became assistant to his father and when his father died two years later he was appointed to his father's chair.

22. Poster Of Schooten frans van schooten. died 338 years ago. 29th May 1660. van schooten wasone of the main people to promote the spread of Cartesian geometry. http://intranet.woodvillehs.sa.edu.au/pages/resources/maths/History/529b.htm

Frans van Schooten died 338 years ago 29th May 1660 Van Schooten was one of the main people to promote the spread of Cartesian geometry. Find out more at http://www-history.mcs.st-andrews.ac.uk/history/Mathematicians/Schooten.html

23. SCHOOTEN Translate this page Nascido em 1615, em Leyden, Países Baixos, faleceu na mesma cidade a 29 de maiode 1660 frans van schooten não deve ser confundido com seu pai, frans van http://www.geocities.com/cobra_pages/fm-schooten.html

COBRA PAGES e seus objetivos educacionais reg. Quem somos COBRA PAGES P.M.F-perguntas mais frequentes Filosofia Moderna e Temas de Filosofia Comportamento Boas Maneiras Feminismo ... CONTACTO NOTAS Para retornar COBRA PAGES em que estava, use a seta de volta do seu navegador Schooten, Frans van Exercitationes mathematicae R.Q.Cobra Para citar este texto: Cobra, Rubem Queiroz -

24. Van Schootens Ellipse Translate this page Der Gelenkmechanismus, der in der nebenstehenden Abbildung dargestellt wird, wurdevon frans van schooten, einem holländischen Mathematiker aus dem 17. http://members.aol.com/geometrie11/koorgeom/vellipse.html

Van Schootens Ellipsenzirkel Der Gelenkmechanismus, der in der nebenstehenden Abbildung dargestellt wird, wurde von Frans van Schooten, einem holländischen Mathematiker aus dem 17. Jahrhundert erfunden. Wenn man am Punkt E zieht, bewegt sich die gesamte Raute OIPG und der Stift am Punkt B zeichnet eine Spur, von der wir zeigen wollen, dass es eine Ellipse ist. Der Mechanismus ist an den Punkten H und I auf der Zeichenunterlage befestigt. Beim Applet weiter unten muss man allerdings am Punkt G ziehen. Aufgaben Fertigen Sie zunächst im Appletfenster eine "Zeichnung" mit den vorgegebenen Einstellungen an. Verändern Sie die Seitenlänge der Raute, indem Sie die Strecke oben links durch Ziehen am rechten Ende verlängern. Prüfen Sie ob dies einen Einfluss auf die Ellipsenform oder -größe hat. Ziehen Sie den Punkt I näher an A heran und löschen Sie die Spurpunkte durch Anklicken des roten Kreuzes unten rechts. Fertigen Sie eine neue "Zeichnung" an. Was hat sich geändert? Welche Lage hat die Gerade OP bezüglich der Ellipse und welche Aufgabe hat die Raute OIPG im Gelenkmechanismus? Wie funktioniert's?

25. Historia Matematica Mailing List Archive: [HM] Frans Van Schooten HM frans van schooten. Samuel S. Kutler (skutler@sjca.edu) Tue, 23 Mar 1999083945 -0500 (EST) Here is what Morris Kline says about frans van schooten http://sunsite.utk.edu/math_archives/.http/hypermail/historia/mar99/0121.html

[HM] Frans van Schooten Samuel S. Kutler s-kutler@sjca.edu Tue, 23 Mar 1999 08:39:45 -0500 (EST) Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Next message: Prof. Lueneburg: "Re: [HM] Euclid" Previous message: Franz Lemmermeyer: "Re: [HM] Frey curves in the work of Hurwitz" Friends: Here is what Morris Kline says about Frans van Schooten: The first task was to explain Descartes's idea. A Latin translation of La Geometrie by Frans van Schooten (1615-60), first published in 1649 and reprinted several times, not only made the book available in the language all scholars could read but contained a commentary which expanded Descartes's compact presentation. In the edition of 1659-61, van Schooten actually gave the algebraic form of a transformation of coordinates from one base line (x-axis) to another. He was so impressed with the power of Descartes's method that he claimed the Greek geometers had used it to derive their results. Having the algebraic work, the Greeks, according to van Schooten, saw how to obtain the results syntheticallyhe showed how this could perspicuous than the algebraic, to amaze the world. Van Schooten may

26. Historia Matematica Mailing List Archive: Re: [HM] Frey Curves In The Work Of Hu Kutler HM frans van schooten ; Next message Samuel S. Kutler HM frans vanschooten ; Previous message Paul Yiu Re HM 4 triangles in a rectangle ; http://sunsite.utk.edu/math_archives/.http/hypermail/historia/mar99/0120.html

Re: [HM] Frey curves in the work of Hurwitz Franz Lemmermeyer lemmerm@mpim-bonn.mpg.de Tue, 23 Mar 1999 15:53:38 +0100 (MET) Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Next message: Samuel S. Kutler: "[HM] Frans van Schooten" Previous message: Paul Yiu: "Re: [HM] 4 triangles in a rectangle" In reply to: Ivan Van Laningham: "Re: [HM] Mayan Mathematics" Next in thread: Antreas P. Hatzipolakis: "Re: [HM] Mayan Mathematics" On Mon, 22 Mar 1999, Jim Propp wrote: It has to be defined over Q, of course. Yes. The talk was given in February 1976; he does not cite Mazur, but surely was aware of his results. [..Hurwitz..] positive integers, not both even. franz Next message: Samuel S. Kutler: "[HM] Frans van Schooten" Previous message: Paul Yiu: "Re: [HM] 4 triangles in a rectangle" In reply to: Ivan Van Laningham: "Re: [HM] Mayan Mathematics" Next in thread: Antreas P. Hatzipolakis: "Re: [HM] Mayan Mathematics"

27. Convergence | Van Schooten's Ruler Constructions A translation of and commentary on frans van schooten s work on constructionsusing only a straightedge. van schooten s postulates http://convergence.mathdl.org/convergence/?pa=content&sa=viewDocument&nodeId=268

28. LotFinder® van schooten , Nederlands Kunsthistorisch Jaarboek, XVII, 1966, pp. 10542, no.61, illustrated. frans Halsmuseum Haarlem, Haarlem, 1969, p. 59, no. 488a. http://www.christies.com/LotFinder/search/LOTDETAIL.ASP?sid=&intObjectID=4274788

29. Joods.nl - 'Oorlogsschilderij' Frans Hals Museum Onder De Hamer Oorlogsschilderij frans Hals Museum op 17 mei het schilderij Stilleven met makreelen rookgerei van de Haarlemse kunstenaar Floris van schooten (15851656 http://www.joods.nl/Members/raya/historical/Folder.2004-04-13.8116432846/JoodsNe

@import url(http://www.joods.nl/joods.css); @import url(http://www.joods.nl/home.css); Ga naar inhoud. Joods.nl Zoek 13 Siewan 5764 Onderdelen Home Israel Wereld Cultuur ... Economie Persoonlijke gereedschappen U bent niet ingelogd Inloggen Lid worden U bent hier: Home Leden raya's Home Geschiedenis ... Tweede Wereldoorlog 'Oorlogsschilderij' Frans Hals Museum onder de hamer 'Oorlogsschilderij' Frans Hals Museum onder de hamer Bij het veilinghuis Christie's in Amsterdam wordt op 17 mei het schilderij 'Stilleven met makreel en rookgerei' van de Haarlemse kunstenaar Floris van Schooten (1585-1656) geveild. Vorig jaar was het doek aan de erven van de oorspronkelijke eigenaar teruggegeven. Otto Busch, de joodse eigenaar, moest het schilderij aan de Duitsers verkopen voor zijn vlucht uit Nederland tijdens de Tweede Wereldoorlog. Vlak na de oorlog, toen de Stichting Nederlands Kunstbezit het kunstwerk had teruggehaald uit Duitsland, was hij niet in staat het schilderij terug te kopen. Toen hij dat in 1964 wel kon, schreef men hem 'dat het wenselijk (was) dat het schilderij van Floris van Schooten voor het Rijk behouden bleef.'

30. Lycosjan - Aqwg624 M, i, Pieter Reiniersz van schooten was born EST ABT 1739. frans JozefEINERHAND Parents was born 18 May 1875 in Heerlen (Limb.), NL. http://membres.lycos.fr/asweerts/aqwg624.htm

Decendants of Blasius Swerts, the ancestors of my children and a lot more about other families too. Johannes FAAS [ Parents was born in Heemstede (N.H.) (NL), ? and was christened 17 Dec 1811 in Heemstede (Berkenrode) (N.H.), NL. He married Catharina VESTER on 29 Dec 1839 in Heemstede (N.H.), NL. Catharina VESTER [ Parents was born 20 Dec 1812 in Heemstede (N.H.), NL. She married Johannes FAAS on 29 Dec 1839 in Heemstede (N.H.), NL. Reinier @ VAN SCHOOTEN [ Parents was born EST ABT 1696. He had the following children: M i Pieter Reiniersz VAN SCHOOTEN was born EST ABT 1739. Frans Jozef EINERHAND [ Parents was born 18 May 1875 in Heerlen (Limb.), NL. He died 25 May 1939 in Heerlen (Limb.), NL. Frans married Anna Maria Margaretha WACHELDER on 28 Nov 1916 in Heerlen (Limb.), NL. Anna Maria Margaretha WACHELDER [ Parents was born 28 Jun 1890 in Heerlen (Welten) (Limb.), NL. She died 16 Dec 1974 in Heerlen (Limb.), NL and was buried 19 Dec 1974. Anna married Frans Jozef EINERHAND on 28 Nov 1916 in Heerlen (Limb.), NL. Jan Jacob EINERHAND was born EST ABT 1845. He married Maria Katharina SCHROE.

31. Lycosjan - Aqwg718 frans van schooten was born EST ABT 1763 and was christened in Heemstede (NH)(NL), ?. She married frans van schooten on 1793 in Heemstede (NH), NL. http://membres.lycos.fr/asweerts/aqwg718.htm

Decendants of Blasius Swerts, the ancestors of my children and a lot more about other families too. Jan VAN VELSEN was born EST ABT 1748 and was christened in Heemstede (N.H.) (NL), ?. He married Neeltje HEEMSKERK on 07 Jun 1778 in Heemstede (N.H.), NL. Neeltje HEEMSKERK was born EST ABT 1753 and was christened in Heemstede (N.H.) (NL), ?. She married Jan VAN VELSEN on 07 Jun 1778 in Heemstede (N.H.), NL. Frans VAN SCHOOTEN was born EST ABT 1763 and was christened in Heemstede (N.H.) (NL), ?. He married Maria HENDRIKSEN on 1793 in Heemstede (N.H.), NL. Maria HENDRIKSEN was born EST ABT 1768 and was christened in Heemstede (N.H.) (NL), ?. She married Frans VAN SCHOOTEN on 1793 in Heemstede (N.H.), NL. Jan VAN SCHOOTEN was born EST ABT 1742 and was christened in Heemstede (N.H.) (NL), ?. He married Grietje Willemze BAAIKES on 1772 in Heemstede (N.H.), NL. Grietje Willemze BAAIKES was born EST ABT 1747 and was christened in Heemstede (N.H.) (NL), ?. She married Jan VAN SCHOOTEN on 1772 in Heemstede (N.H.), NL. Barend STOKMANS was born EST ABT 1776 and was christened in Heemstede (N.H.) (NL), ?. He married Jansje VAN SCHOOTEN on 1806 in Heemstede (N.H.), NL.

32. Christiaan Huygens 'under Construction': in Ludo Aleae 1657, images, The text on games of dice, written in Dutch by ChristiaanHuygens and translated published into Latin by frans van schooten. http://www.leidenuniv.nl/fsw/verduin/stathist/huygproj.htm

Load Home page + menu Started jan, 2, 2004 Last Update april, 5, 2004 Christiaan Huygens 'under construction'. Texts and Images Texts Over Reeckeningh in Spelen van Geluck / De Ratiociniis in Ludo Aleae : facts and figures Everything you might want to know about both texts, but were afraid to ask: about Van Schootens book of which they formed a small part, about variations in the title, bibliographic information, various editions etc. The origin of De Ratiociniis in Ludo Aleae The correspondence of Christiaan Huygens with Van Schooten, Roberval, Mylon, Fermat and others about the De Ratiociniis in Ludo Aleae De Ratiociniis in Ludo Aleae , images Note: the images were scanned from a photocopy. The scans of some pages (518, 520,522,524, 526, 528) were partly unreadable and had te be digitally cleaned up. The pages 526 and 528 are not yet available. The remarks on page 525 (curly braces) and 527 (verbeterd to ae ) were made by me. De Ratiociniis in Ludo Aleae 1657, text Over Reeckeningh in Spelen van Geluck 1660, text

33. A Short History Of Probability And Statistics: 17th Century Huygens writes a draft version of van Rekeningh in Spelen van Geluck and sendsit to frans van schooten, professor of mathematics at the Leyden University. http://www.leidenuniv.nl/fsw/verduin/stathist/sh_17.htm

Load Home page + menu Last Update april 21, 2004 17th century Introduction Some texts start the tale of probability and statistics by mentioning the isolated efforts of Cardano ( Liber de Ludo Aleae (1565), first published in 1663) and Galilei ( Sopra le Scoperte dei Dadi (around 1620), first published in 1718), but there is a consensus that it all began with some questions on gambling posed by Antoine Gombaud, Chevalier de Méré and Damien Mitton to Pascal in 1654. As there are no journals in those days , other means are needed to obtain and divulge the latest scientific developments. Writing letters was one way of dealing with this obstacle. It is Marin Mersenne who plays a central part as a communication link between scientists and philosophers all over Europe by writing and receiving letters and passing them to others. Among his acquaintances are Descartes, Pascal, Fermat, Galilei and Huygens. Between July and October of that year seven letters are written by Blaise Pascal and Pierre de Fermat which form the genesis of the probability theory. One of the topics of these letters, the forementioned question of de Méré, is known as the

34. Pythagoras Euclides Euclid Geometrica Meetkonst Moll Wiskunde frans van schooten de oudere (1617), Mattheus van Nispen (1662), Georg Mohr (1672),anoniem (1673), PA Nollet (1715), Lambertus Fockens (1737). Opmerking. http://www.euronet.nl/users/warnar/demostatistiek/meth/euclides.htm

HOME Moll Amsterdam Barcelona Biosciences Chess Chloroplasts Euclid Leeuwenhoek [Down] Referenties Euclides van Alexandrië Euclid, "The Elements", first translation in Dutch by Claas Jansz Voogt and published in 1695, Amsterdam Euclides, "De Elementen", voor het eerst in het Nederlands vertaald en uitgegeven in 1695 EUCLIDIS BEGINSELEN der MEETKONST, Vervaat in 15 Boeken Begrijpende de Beginselen, op dewelke de gant- sche Wiskonst rust, Daarom ook te recht genaamt BEGINSELEN der WISKONST. Eerst in onze nederduytse taal met alle omsightigheid, kort- heyd en klaarheyd opgesteld door Claas Jansz. Vooght Geometra, Geswooren Landmeter en Leermeester, in de Wiskonst, als Stuur- manskonst enz. tot Amsterdam. By Johannes van Keulen, Boek- en Kaart verkoper,by de Nieu- we-Brugh, in de gekroonde Lootsman, Anno 1695. Met Privilegie voor 15 Jaren Opmerkingen: 1) De term Wiskunde (WISKONST) is in de Nederlandse taal geintroduceerd door Simon Stevin die leefde van 1548 tot 1620.

35. Biography-center - Letter V Mathematicians/Roomen.html; van schooten, frans wwwhistory.mcs.st-and.ac.uk/~history/Mathematicians/schooten.html;vance, Cyrus Robert http://www.biography-center.com/v.html

Visit a random biography ! Any language Arabic Bulgarian Catalan Chinese (Simplified) Chinese (Traditional) Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hebrew Hungarian Icelandic Indonesian Italian Japanese Korean Latvian Lithuanian Norwegian Polish Portuguese Romanian Russian Serbian Slovak Slovenian Spanish Swedish Turkish V 205 biographies Vaca, Alva Nuñez Cabeza de www.pbs.org/weta/thewest/people/a_c/cabezadevaca.htm Vaca, Alva Nuñez Cabeza de www.newadvent.org/cathen/03126c.htm Vacca, Giovanni www-history.mcs.st-and.ac.uk/~history/Mathematicians/Vacca.html Vaga, Perino del www.getty.edu/art/collections/bio/a952-1.html Vailati, Giovanni www-history.mcs.st-and.ac.uk/~history/Mathematicians/Vailati.html Val, Patrick du www-history.mcs.st-and.ac.uk/~history/Mathematicians/Du_Val.html Vala, Katri www.kirjasto.sci.fi/kvala.htm VALEJO, Christiane www.christiane-valejo.com/Biography.htm Valentin, www.kirjasto.sci.fi/valentin.htm Valentin, Moise www.kfki.hu/~arthp/bio/v/valentin/biograph.html Valentine, www.knight.org/advent/cathen/15254b.htm Valerio, Luca

36. Pythagoras : Wiskundetijdschrift Voor Jongeren 10, frans van schooten jr., door Jan van Maanen, De Nederlandse wiskundigefrans van schooten jr. (16151660) leefde in een tijd waarin http://www.pythagoras.nu/mmmcms/public/archief365.html

voorpagina rekenwerk veelvlakken wis-spellen ... English WISKUNDETIJDSCHRIFT VOOR JONGEREN Pythagoras archief juni 1997 Jaargang 36 nummer 5 Esperanto , door Johan Derks Enkele raadsels uit een Bulgaars boekje, dat voor de rest van de wereld vertaald is in het Esperanto. Esperanto raadsels Kleine nootjes Eenvoudige vraagstukken. Deze keer: De kubus, Plussen en minnen, Cijfers en letters, Het schaakbord, Wie is dit? en Een oud Chinees probleem. Driehoeksgetallen en kwadraten , door Peter Stevenhagen Er is een bijna universeel gevoel dat sommige getallen 'mooier' zijn dan andere. Zulke mooie getallen zijn vaak onderdeel van een regelmatige reeks. Voorbeelden zijn de driehoeksgetallen (aantal punten in een 'mooie' driehoek, dus 1, 3, 6, 10, 15, ...) en de kwadraten. Getallen die tot beide reeksen behoren kunnen we 'superharmonisch' noemen. Voor deze superharmonische getallen kunnen we verschillende formules afleiden. algoritme mooie getallen patroontjesharmonie superharmonisch ... empirische wiskunde De Hénon-aantrekker , door Hans Lauwerier Het dynamische systeem van Hénon bestaat uit een tweetal iteratieve vergelijkingen voor x en y. Deze vergelijkingen geven banen in het (x,y)-vlak. Het blijkt dat er een lijn-structuur met een vreemde vorm ontstaat, die alle naburige vormen aantrekt, een zogenaamde vreemde aantrekker.

37. Still Life Painters: Artcyclopedia frans Snyders, 15791657, Flemish Painter, frans Snyders Grapes, Peaches, and Quince Florisvan schooten, 1590-1655, Dutch Painter, Floris van schooten Still Life http://www.artcyclopedia.com/subjects/Still_Life.html

Artists by Subject Matter: Still Life Painters Chronological Listing Use ctrl-F (PC) or command-F (Mac) to search for a name Juan Sanchez Cotan Spanish Painter Ambrosius Bosschaert the Elder Dutch Painter Art Prints Floris van Dijck Dutch Painter Frans Snyders Flemish Painter Art Prints Osias Beert the Elder Flemish Painter Art Prints Juan de Espinosa Spanish Painter Floris van Schooten Dutch Painter Art Prints Daniel Seghers Flemish Painter Willem Claesz. Heda Dutch Painter Clara Peeters Flemish Painter Art Prints Jacob van Es Flemish Painter Art Prints Juan van der Hamen y Leon Spanish Painter Pieter Claesz Dutch Painter Sebastien Stoskopff French Painter Francisco de Zurbaran Spanish Painter Art Prints Giovanna Garzoni Italian Painter Jacques Linard French Painter Art Prints Francois Ykens Flemish Painter Jan Davidsz. de Heem Dutch Painter Art Prints Lubin Baugin French Painter Louisa Moillon French Painter Antonio de Pereda Spanish Painter Juan de Arellano Spanish Painter Francisco de Palacios Spanish Painter Abraham Hendrickz. van Beyeren Dutch Painter Art Prints Jan Jansz. van de Velde III

38. Dutch Artists: Artcyclopedia frans Hals, 15821666, Painter, frans Hals Boy with a Lute Art Prints. Floris vanschooten, 1590-1655, Painter, Floris van schooten Still Life with Fruit, Bread and http://www.artcyclopedia.com/nationalities/Dutch.html

Artists by Nationality: Dutch Artists Chronological Listing Use ctrl-F (PC) or command-F (Mac) to search for a name Master of the Tibertine Sibyl 15th Century Jan Mostaert Painter Jacob Cornelisz van Oostsanen Painter Second Gouda Woodcutter Lucas van Leyden Painter Jan van Scorel Painter Maerten van Heemskerck Painter Corneille de Lyon Painter Jan Mandyn Painter Jan Vermeyen Painter Pieter Aertsen Painter Lambert Sustris Painter Dirck Volkertszoon Coornhert Hans Vredeman de Vries Cornelis van Dalem Painter Master of Female Half-Lengths Painter Johan Gregor van der Schardt Sculptor Jacques de Gheyn Miniaturist Art Prints Hubert Gerhard Sculptor Karel van Mander Writer/Painter Hendrick Goltzius Painter/Engraver Art Prints Adriaen de Vries Sculptor Cornelis Cornelisz. van Haarlem Painter Hendrick Cornelisz. Vroom Painter Abraham Bloemaert Painter Jacques de Gheyn II Painter Hendrick de Keyser I Painter Jan Saenredam Engraver Joachim Antonisz. Wtewael Painter Michiel Jansz. Miereveld Painter Paulus Moreelse Painter Jan H. Muller Painter Ambrosius Bosschaert the Elder Painter Art Prints Hendrik Hondius the Elder Art Prints Hendrick van Balen Painter Floris van Dijck Painter Adam Willaerts Painter Willem Jacobsz Delff Engraver Hendrik van Steenwyck the Younger Painter Andries Stock Cornelis Claesz. van Wieringen

39. Untitled frans van schooten, (16151660), Netherlands, had succeeded his father as professorof mathematics at Leyden. frans van schooten (1615-1660) Dutch. http://www.math.tamu.edu/~don.allen/history/precalc2/precalc2.html

Next: About this document April 3, 1997 Early Calculus II Frans van Schooten , (1615-1660), Netherlands, had succeeded his father as professor of mathematics at Leyden. Because the original by Descartes was difficult to read, Van Schooten made a careful and clear translation of Descartes' La Geometrie into Latin, the preferred language of scholars. Partly the reason for this was so that his students could understand it. In 1659-1661, an expanded version was published. Geometria a Renato Des Cartes Two additional additions appeared in 1683 and 1695. It is reasonable to say that although analytic geometry was introduced by Descartes, it was established by Schooten. Jan de Witt , (1625-1672), the Grand Pensionary of Holland, was a colleague of Schooten. He wrote in his earlier years Elementa curvarum , a work in two parts. The first part (Part I) was on the kinematic and planimetric definitions of the conic sections. Among his ideas are the focus-directrix ratio definitions. The term `directrix' is original with De Witt. Part II, on the other hand, makes such a systematic use of coordinates that it has justifiably been called the first textbook on analytic geometry. (Descartes'

40. Ellips [8] 8. Ellipsograaf Vermoedelijk op basis van de door Johan de Witt (16251672) gegeven(zie paragraaf 5) definitie is door frans van schooten de Jongere (1615-1660 http://www.pandd.demon.nl/ellips/ellips8.htm

Ellips-constructies met Cabri [8] Ellipsograaf Constructie Bewijs Kegelsneden ... Cabri Vorige Begin 8. Ellipsograaf Vermoedelijk op basis van de door Johan de Witt (1625-1672) gegeven ( zie paragraaf 5 ) definitie is door Frans van Schooten de Jongere (1615-1660) een apparaat ontwikkeld waarmee een ellips kan worden getekend; dit apparaat staat bekend onder de naam "ellipsograaf van Van Schooten" ( zie figuur 8a en figuur 8b figuur 8a figuur 8b Twee stangen zijn in het punt B scharnierend aan elkaar verbonden. In het punt E is een schrijfstift bevestigd. Het eindpunt A van de ene stang is scharnierend bevestigd in de oorsprong. Het punt D van de andere stang kan alleen horizontaal worden bewogen langs een lat KL.. In het " Museo Universitario di Storia Naturale e della Strumentazione Scientifica" te Modena (Italië) bevindt zich ook een dergelijk apparaat ( zie figuur 9 figuur 9 Constructie We kunnen in Cabri een model van deze ellipsograaf maken. In figuur 8a kan het punt D op KL precies de lengte van AB+BD afleggen. De maximale lengte van KL is dus 4 AB.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 2     21-40 of 102    Back | 1  | 2  | 3  | 4  | 5  | 6  | Next 20