61. OnTab Online: Tabel 51 Briggs, Henry, 1561 1630. Kepler, Johannes, 1571 - 1630. oughtred,william, ca. 1574 - 1660. Bachet, Claude-Casper, de Mezirac, 1581 - 1638. http://www.casia.nl/OnTab/tabel51.html

51. Wiskundigen Ahmes ca. 1650 vC Pythagoras ca. 540 vC Hippocrates ca. 440 vC Plato ca. 430 vC - ca. 349 vC Hippias ca. 425 vC Theaethetus ca. 417 vC - ca. 369 vC Archytas ca. 400 vC Xenocrates 396 vC - 314 vC Theodorus ca. 390 vC Aristoteles 384 vC - 322 vC Menaechmus ca. 350 vC Euclides ca. 300 vC Archimedes ca. 287 vC - ca. 212 vC Nicomedes ca. 240 vC Eeratosthenes ca. 230 vC Diocles ca. 180 vC Hipparchus ca. 180 vC - ca. 125 vC Hero van Alexandrie ca. 75 Ptolemaeus ca. 85 - ca. 165 Nicomachus van Gerasa ca. 100 Theoon van Smyrna ca. 125 Diophantus 1ste of 3de eeuw Pappus ca. 320 Iamblichus ca. 325 Produs Zu Chongzhi Brahmagupta ca. 628 Al-Chwarizmi ca. 825 Thabit ibn Qurra Mahavira ca. 850 Bhaskara 1114 - ca. 1185 Leonardo van Pisa (Fibonacci) ca. 1170 - na 1240 Ibn Al-Banna Zhu Shijie ca. 1303 Pacioli, Fra Luca ca. 1445 - 1517 Vinci, Leonardo da Durer, Albrecht Stifel, Michael Tartaglia, Niccolo ca. 1500 - 1557 Cardano, Girolamo

62. History 1615 The slide rule is invented by william oughtred (15751660). 1617 1621william oughtred invents the circular slide rule. 1623 http://www.digidome.nl/history.htm

basic Altair Konrad Zuse Alan Turing John Vincent Atanasoff History of Computing As long as we can remember people from all over the world have tried to invent methods to ease the painstaking work of counting. Somewhere around 2600 BC, the Abacus was invented. Abacus In the Inca empire counting was supported by the Quipu , a set of colored cords in which knots registered the exact figures. Milestones on the road to the true invention of the computer are many. Here are a few of those miracles: A Scottish mathematician named John Napier (1575-1660), invents logarithms The slide rule is invented by William Oughtred John Napier invents the "Napier's Bones" a set of ivory sticks, used for "mechanical" calculations. William Oughtred invents the circular slide rule In Tübingen Wilhelm Schickhard invents the calculating clock Blaise Pascal , the famous French philosopher and mathematician, invents the Pascaline , an early adding machine. the Pascaline Sir Samuel Morland invents the multiplying machine Freiherr Gottfried Wilhelm von Leibniz invents the Leibniz Wheel , a calculating device that could perform multiplication and division. Religious thinking makes him give the number 1 to God and the to "nothing". He used this as a basis for developing a Mathematical logic, thus laying the basis for the binary system.

63. Oughtred The society is named after william oughtred, who is generally regarded to be theinventor of the circular slide rule in 1622 and the rectangular slide rule in http://home.att.net/~philcannon/oughtred.htm

The Oughtred Society The Oughtred Society is a group of collectors dedicated to the history and preservation of the slide rule. The society is named after William Oughtred, who is generally regarded to be the inventor of the circular slide rule in 1622 and the rectangular slide rule in 1633. Formed in 1991, The Society now has over 350 members throughout the U.S., Europe, and Japan. Membership dues are $25/year ($30 non-US). If you have an interest in Slide Rule collecting and it's history, join the Oughtred Society. The Society tries to preserve vanishing Slide Rules and provide a history for the interested collector. We also buy, sell, and trade Slide Rules at our annual convention and in several Swap Sheets published throughout the year. You can learn more about instruments like: "Palmer's Computing Scale. This is a revolving table, for solving mathematical problems, by a simple mechanical process. it consists of logarithmeric combination of numbers, arranged on two circles, one of which revolves within the other; so that, by the simple process of moving a circular card, the relation of the figures to each other is changed, so as to solve the most difficult problems. The invention must come into general use, though we have not learned where they may at present be procured." From Scientific American Vol 1, No 8, which may be seen at the 19th Century Scientific American Home Page.

64. Doug Coward's Analog Computer Museum 70 BC, Antikythera mechanism losted in shipwreck off the island of Antikythera.1621, william oughtred invents the slide rule. william oughtred. http://dcoward.best.vwh.net/analog/analog1.htm

Analog Computer Museum Definitions Computer - A machine that caculates. Analog computer - A computer that performs mathematical operations in a parallel manner on continuous variables. The components of the computer are assembled to permit the computer to perform as a model, or in a manner analogous to some other physical system. Mechanical analog computer - An analog computer with input and output usually expressed as shaft postion or degrees of shaft rotation. Electronic analog computer - An analog computer with input and output usually expressed as direct current voltages. Hybrid computer - A computer with both analog and digital computing elements interconnected. What are Electronic Analog Computers Electronic analog computers may seem to be "simple" or "like a toy computer", in fact they are powerful tools that were used during the 1950s and 1960s to design and test systems like ICBMs, supersonic aircraft and spacecraft. But the analog computer can be used to model any physical system that can be described by mathematical formulas, even more mundane ones from modeling the effects of pollution on the fish population in a river to fine tuning the suspension on a new car design. Analog computers will not only test a fixed design but also allows variables to be quickly changed to test "what if" conditions. By scaling time as an independent variable, physical processes that happen quickly can be stretched out, and processes that happen over a long period can be shortened to make the process easier to study. And it is very easy to study variables at any point in the program while it is running to find faults in the program design.

65. Oughtred O For . oughtred, william (15751660). The British Mathematician wasborn in Buckinghamshire, UK and studied at Cambridge University. http://www.moe.edu.sg/schools/siling/onlineqns/Maths/Project/oughtred.htm

O For.... Oughtred, William (1575-1660) The British Mathematician was born in Buckinghamshire, UK and studied at Cambridge University. He wrote extensively on Mathematics and his most notable work was a text book he wrote on algebra and arithmetic and introduced many new symbols. He also invented the slide rule. Home A B C ... N ] [O] [ P Q R S ... Z

66. Today In Technology History - Mar 5 March 5. Today we celebrate the slide rule and its inventor. On March5, 1574, william oughtred (pronounced AWtred) was born in England. http://www.tecsoc.org/pubs/history/2001/mar5.htm

Today in Technology History (You can receive "Today in Technology History" by e-mail! To subscribe click here ; to read past issues click here March 5 Today we celebrate the slide rule and its inventor. On March 5, 1574, William Oughtred (pronounced AW-tred) was born in England. He was educated at Eton and Cambridge, and although he was a minister by profession, he spent nearly all his free time studying and teaching mathematics. In college, he became a workaholic who stayed awake late into the night studying math a habit he retained his entire life. Oughtred's contributions to mathematics were substantial. In his most famous book, Clavis Mathematicae (The Keys to Mathematics), he introduced several new mathematical symbols, such as the "x" for multiplication. In the 1620s or early 1630s, Oughtred invented the "slide rule" a device that lets users perform difficult calculations without consulting tables, by carefully sliding two specially-marked rulers against one another. Oughtred's original slide rule was actually round, made of rings which he called "circles of proportion," but it was not long before slide rules were made straight and much more convenient. The slide rule became the proud badge and status symbol of the mathematician, the scientist and the engineer. It was an utterly indispensable tool for more than three centuries, until it was supplanted in 1971 by the pocket calculator. Many of the men and women who were trained to use slide rules still treasure their retired tools as fond reminders of a bygone subculture, and of a different way of thinking.

67. Selected Early Works: O socii 1690. (inscription). oughtred, william, 15751660. The descriptionand use of the dovble horizontall dyall. Whereby not onely http://www.thebakken.org/library/books/early_o.htm

Books and Manuscripts Selected Pre-Eighteenth Century Works: O Previous page Next page Oppianus. [4], 152 l. 20 cm. Signatures: i , A-Z , a-p Provenance: "Mors nil ad nos" unidentified (bookplate crest), Bibliotheque H. E. Sauvage (ink stamp); Ex Libris Jo. Bapt. Maul Ambian Anno 1708 (inscription) Reviews knowledge of fish and fishing, including accurate reporting of the torpedo's numbing abilities and locating the anatomical source of those powers. Oppianus. Halieutica. [The Latin trans. of Laurentius Lippius. Colle di Valdelsa, Bonus Gallus, 12 September, 1478] [64] l. 21 cm. Signatures: a-h . Signatures a , a , d , and h supplied in ms.; b appears twice: in its proper place and also on the second l. of gathering b, where it is crossed out and corrected in ms. to b Pages ruled in red; spaces with guide letters for initials; some initials provided in red or blue. On the first page, initial O, marginal decorations, and arms in lower margin are illuminated in gold and colors. Title from Brit. Mus. Cat. (XV cent.)

68. Oughtred Society The oughtred Society. The oughtred Society is named after william oughtred,the inventor of the Slide Rule. The oughtred Society +1 (925) 7549337. http://www.sliderules.clara.net/other-resources/oughtred.htm

Slide rules HOME page OTHER RESOURCES GROUPS SITE MAP The Oughtred Society The Oughtred Society is named after William Oughtred, the inventor of the Slide Rule. The Oughtred Society PO Box 99077 Emeryville CA 94662 USA Membership: $25 per year in USA, $30 per year elsewhere. The society publishes a Journal, containing many interesting articles and information about slide rules. Two issues of the Journal are published per year. Most of the contributors to the Journal have been collecting slide rules for a long time, and thus have extensive collections. Three meetings per year are held in the USA, and one per year in Europe. An index of the contents covering the period 1995 to 1999 is given here. Back issues can be obtained from the Editor. Mr Wayne Lehnert Email: wlehnert@home.com Secretary of the Oughtred Society Phone: +1 (925)754 9337 Bob Otnes bobotnes@mediacity.com Editor, The Journal of the Oughtred Society. "Some info about the Oughtred Society: We do not have an official web site. We may put up a web site at some point, but it is not high on our list. For one reason, many of our members are old geezers like myself while I have been in computers for 38 years, the majority of our members are not computer literate. Many of us keep track of info on 3 x 5 cards. I would say that the telephone is currently our major mode of communication.

69. UK.SearchEngine.com - Finds It Fast! Peter Reimers. oughtred, william (15741660) - Best known for theinvention of an early form of the slide rule. Peirce, Benjamin http://uk.searchengine.com/Top/Science/Math/Mathematicians/Famous_People/

Home Top Science Math ... Mathematicians > Famous People ADULT CARS SHOPPING FINANCE ... Fourier - Jean Baptiste Joseph Fourier (1768-1830) - Baron, mathematical physicist, French Revolution, a teacher, a secret policeman, a political prisoner, governor of Egypt, The Analytic Theory of Heat Fermat - Pierre de Fermat (1601-1665) - From `A Short Account of the History of Mathematics' (4th edition, 1908) by W. W. Rouse Ball. Gauss - Carl Friedrich Gauss (1777-1855) - Gauss' Biography, Formulae, properties, Gauss' Life in Charts, Quotes, Doing a report on Gauss?, Works Cited List Archimedes (c. 287 B.C.-212 B.C.) - (Encyclopedia.com) Greek mathematician, physicist, and inventor. Leibniz - Gottfried Wilhelm Leibniz (1646-1716) - Invented the differential and integral calculus (independently of Sir Isaac Newton), Ptolemy - Ptolemy's Ptools - History of Ptolemy (c. 87-150) - Who was Ptolemy? Claudius (Ptolemaues) Ptolemy, born in Egypt in about 85 A.D., one of the most infuential Greek astronomers, geographers and mathematicians. Abel - Niels Henrik Abel (1802-1829) - Norwegian mathematician. Worked on elliptic functions and integrals, algebraic solution of equations and solubility by radicals.

70. LINKS Translate this page WWW.oughtred.ORG Dedicated to the history and collection of slide rules,- named after the inventor of the modern slide rule william oughtred. http://hometown.aol.com/einschienenbahn/page4.html

WILLKOMMEN ZUR LINK-SEITE DER ALWEG ARCHIVES WELCOME TO THE LINK PAGE OF THE ALWEG ARCHIVES Zurück zu / Back to Startseite ALWEGBAHN THE ALWEG ARCHIVES Für den Inhalt der hier aufgeführten Links wird keine Verantwortung übernommen. No responsibility is taken for the content of the links listed here. CLICK ALWEG LOGO E-MAIL THE ALWEG ARCHIVES = Ausgezeichnete LINK-Liste = Excellent LINK-Page AMF MONORAIL Interessante und hervorragend gestaltete Webseite von RANDY LAMBERTUS über die AMF-Hängeeinschienenbahn der New Yorker Weltausstellung von 1964/65. Interesting and excellently made website by RANDY LAMBERTUS about the AMF suspension monorail of the 1964/65 New York World's Fair. BAHNSUCHE Umfangreiche deutsche Suchmaschine, die für jeden Eisenbahninteressierten zu vielen Aspekten (Vorbild und Modell) etwas zu bieten hat. Extensive German search-engine for everyone interested in the world of railroads (prototype and model). BLICKPUNKT STRASSENBAHN Umfassende deutsche Webseite mit globalem Horizont zum Thema Strassenbahn in deutscher und englischer Sprache.

71. Mathem_abbrev Noether, Emmy. Ockham, william of Oka, Kiyoshi, Omar Khayyam Ortega,Juan de, Ostrogradski, Mikhail oughtred, william. Pacioli, Luca http://www.pbcc.cc.fl.us/faculty/domnitcj/mgf1107/mathrep1.htm

Mathematician Report Index Below is a list of mathematicians. You may choose from this list or report on a mathematician not listed here. In either case, you must discuss with me the mathematician you have chosen prior to starting your report. No two students may write a report on the same mathematician. I would advise you to go to the library before choosing your topic as there might not be much information on the mathematician you have chosen. Also, you should determine the topic early in the term so that you can "lock-in" your report topic!! The report must include: 1. The name of the mathematician. 2. The years the mathematician was alive. 3. A biography. 4. The mathematician's major contribution(s) to mathematics and an explanation of the importance. 5. A historical perspective during the time the mathematician was alive. Some suggestions on the historical perspective might be: (a) Any wars etc. (b) Scientific breakthroughs of the time (c) Major discoveries of the time (d) How did this mathematician change history etc.

72. SUBJECT INDEX EAIA CHRONICLE Vol 41-46 L - R Osgood, J. Lester, brace patent, 45, 1, 6*. Otis, WS, steamshovel patent,42, 1, 18*. oughtred, william, calculating rule, 41, 2, 24*. oxyoke, 45,1, 11*. http://www.eaiainfo.org/csubl_r.htm

THE CHRONICLE OF THE EARLY AMERICAN INDUSTRIES ASSOCIATION Subject Index: L through R Articles judged to contain insufficient information to be of value in an index (i.e. unidentified whatsits or unidentified maker names) are not included. Any given article may be indexed under more than one subject. General: Illustrated articles and photographs are indicated with an * following the reference. Spellings are entered as they actually appear in THE CHRONICLE. Pages referenced as C1-C4 indicate unnumbered front and rear covers. Compiled by Clifford D. Fales (1996). Vol 41-46 Subject Index: A through C Vol 41-46 Subject Index: D through K Vol 41-46 Subject Index: S through Z Author Index to Volumes 41 through 46 (1988 - 1993) Subject Index to Volumes 41 through 46 (1988 - 1993) L - R SUBJECT VOLUME ISSUE PAGE L'Hommedieu, auger patent L'Hommedieu, Ezra, auger patent label, fruit crate label, fruit crate labor, by women labor, by women labor, by women Lamb, Jas. H., planes lamp, nursing Lamson lock cutter, coopering

73. The Red Tape opportunity to play at lunchtime! Past Comments. Christopher oughtred william Jackson and Son Plc, Hull. I have listened to The http://www.theredtape.co.uk/feedback.shtml

this month history register audio ... the red shop Here at The Red Tape we believe that listening is one of the most important skills in business and in life. Each month you listen to The Red Tape and visit our web pages here on the internet. We'd now like to take the time to listen to you. This page is your space to comment or make suggestions for other listeners and the production team to see. Send us your comments Use the form to the right of this page to comment on The Red Tape, this website or The Red Shop. Simply click on the submit button when you've finished and your comments will displayed. Recent Comments Bradley Hedge, B. A. Hedge and Associates - Newcastle, Australia. "I listened to the audio when researching material for a Technical course I am doing here at Newcastle, Australia. Very good. Have archived the site in my "Favourites" folder to show my children." Graeme Dixon, Europarc Innovation Centre Manager "I listened to the recent Red Tape, and in particular the Masterclass on the way to a very important meeting and decided to put some of the ideas to the test. It was a great success and I not only achieved what I wanted at the meeting, but the company also offered me a job as a director! Thanks Steve McDermott and The Red Tape team." Chris Boyd, University of Texas at Austin.

74. Simbolos Translate this page El símbolo fue introducido por william oughtred en su libro ClavisMathematicae (1631). oughtred escribía las proporciones asi abcd. http://personal.redestb.es/javfuetub/Varios/Cajon/Simbolos.html

Simbolos de operaciones: p f Diofanto usaba una letra griega con acento para representar una cantidad desconocida. En la Edad Media se utilizaban palabras para representar cantidades desconocidas: cosa = x census = x cubo = x censo di censo = x cubo relato cosa = x cubo di cubo cosa = x (para la integral) fue usado por primera vez por Gottfried Wilhelm Leibniz . d La flecha ( http://members.aol.com/jeff570 si estas interesado en este tema.

75. OPE-MAT - Historique Translate this page de Mellin, Hjalmar Mouton, Gabriel Osgood, william Menabrea, Luigi Muir, Thomas Ostrogradski,Mikhail Menaechmus Mydorge, Claude oughtred, william Menelaus of http://www.gci.ulaval.ca/PIIP/math-app/Historique/mat.htm

A Abel , Niels Akhiezer , Naum Anthemius of Tralles Abraham bar Hiyya al'Battani , Abu Allah Antiphon the Sophist Abraham, Max al'Biruni , Abu Arrayhan Apollonius of Perga Abu Kamil Shuja al'Haitam , Abu Ali Appell , Paul Abu'l-Wafa al'Buzjani al'Kashi , Ghiyath Arago , Francois Ackermann , Wilhelm al'Khwarizmi , Abu Arbogast , Louis Adams , John Couch Albert of Saxony Arbuthnot , John Adelard of Bath Albert , Abraham Archimedes of Syracuse Adler , August Alberti , Leone Battista Archytas of Tarentum Adrain , Robert Albertus Magnus, Saint Argand , Jean Aepinus , Franz Alcuin of York Aristaeus the Elder Agnesi , Maria Alekandrov , Pavel Aristarchus of Samos Ahmed ibn Yusuf Alexander , James Aristotle Ahmes Arnauld , Antoine Aida Yasuaki Amsler , Jacob Aronhold , Siegfried Aiken , Howard Anaxagoras of Clazomenae Artin , Emil Airy , George Anderson , Oskar Aryabhata the Elder Aitken , Alexander Angeli , Stefano degli Atwood , George Ajima , Chokuyen Anstice , Robert Richard Avicenna , Abu Ali B Babbage , Charles Betti , Enrico Bossut , Charles Bachet Beurling , Arne Bouguer , Pierre Bachmann , Paul Boulliau , Ismael Bacon , Roger Bhaskara Bouquet , Jean Backus , John Bianchi , Luigi Bour , Edmond Baer , Reinhold Bieberbach , Ludwig Bourgainville , Louis Baire Billy , Jacques de Boutroux , Pierre Baker , Henry Binet , Jacques Bowditch , Nathaniel Ball , W W Rouse Biot , Jean-Baptiste Bowen , Rufus Balmer , Johann Birkhoff , George Boyle , Robert Banach , Stefan Bjerknes, Carl

76. History Of Calculators - William Seward Burroughs In 1632, the circular and rectangular sliderule was invented by W. oughtred (15741660).Illustration Adding Machine. Calculators william Seward Burroughs Born http://inventors.about.com/library/inventors/blcalculator.htm

zfp=-1 About Homework Help Inventors Search in this topic on About on the Web in Products Web Hosting Inventors with Mary Bellis Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS 20th Century Inventions History of Computers/Internet A to Z Inventions ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement History of Calculators Slide Ruler History of the Slide Ruler Before we had calculators we had slide rules. In 1632, the circular and rectangular sliderule was invented by W. Oughtred (1574-1660). Illustration: Adding Machine Calculators William Seward Burroughs Born 1857 Rochester, N.Y - Died 1898 In 1885, Burroughs filed his first patent for a calculating machine. However, his 1892 patent was for an improved calculating machine with an added printer. William Seward Burroughs invented the first practical adding and listing machine - National Inventors Hall of Fame. William Seward Burroughs Inventor of the first workable adding machine, was born in rural New York in 1855. Burroughs Adding Machine Company Burroughs Adding Machine Company traced its founding to William Seward Burroughs who invented and patented the first workable adding and listing machine in St. Louis, Missouri in 1885.

77. So Biografias: Nomes WILLIAM william Osler, Sir william oughtred Owtred william Parry Murphy william Penn williamPepper william Petty william Prout william Ramsey, Sir william Richard http://www.sobiografias.hpg.ig.com.br/WILLIAM.html

Nomes "WILLIAM" William Abney Sir of Wiveleslie ... William Wordsworth

78. NAPIER, John, A Description Of The Admirable Table Of Logarithmes The second issue comprises the sheets of the 1616 first, with a canceltitle, and an added sixteen pages of Appendix by william oughtred. http://www.polybiblio.com/watbooks/2556.html

79. Biography.com Otway, Thomas, 1652 1685. Oud, Jacobus Johannes Pieter, 1890 1963. oughtred,william, 1575 1660. Ouida, 1839 1908. Ouimet, Francis (Desales), 1893 1967. http://search.biography.com/bio_browse.pl?letter=O&num=275

80. À¯¸íÇÑ ¼öÇÐÀÚ BC355?) ?(?/1906~1983) ? Euler, Leonhard (1707.4.15~1783.9.18) oughtred, william (1574.3.5~1660.6.30) Wightman http://user.chollian.net/~jjang88/mathman/mathman.htm

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