William Oughtred

William Oughtred [[engraving]] by [[Wenceslaus Hollar]] William Oughtred (5 March 1574 – 30 June 1660), also Owtred, Uhtred, etc., was an English mathematician and Anglican clergyman. After John Napier invented logarithms and Edmund Gunter created the logarithmic scales (lines, or rules) upon which slide rules are based, Oughtred was the first to use two such scales sliding by one another to perform direct multiplication and division. He is credited with inventing the slide rule in about 1622. He also introduced the "×" symbol for multiplication and the abbreviations "sin" and "cos" for the sine and cosine functions. Provided by Wikipedia
Showing 1 - 20 results of 50 for search 'Oughtred, William, 1575-1660', query time: 0.44s Refine Results
  1. 1
    The circles of proportion and the horizontal instrument : The former shewing the maner how to work proportions both simple and compound: and the ready and easy resolving of quæstions both in arithmetic, geometrie, & astronomie: and is newly increased with an additament for navigation. All which rules may also be wrought with the penne by arithmetic, and the canon of triangles. The later teaching how to work most quæstions, which may be performed by the globe: and to delineat dialls upon any kind of plaine. Invented, and written in latine by W.O. Translated into English, and set out for the public benefit, by William Forster.
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  2. 2
    Guilelmi Oughtred Ætonensis Opuscula mathematica : hactenus inedita.
    by Oughtred, William, 1575-1660
    Published 1677
    Microform Book
  3. 3
    Trigonometria, hoc est, Modus computandi triangulorum latera & angulos : ex canone mathematico traditus & demonstratus /
    by Oughtred, William, 1575-1660
    Published 1657
    Microform Book
  4. 4
    Dialling performed instrumentally by our hemisphere in plane : projected and first fitted by Mr. William Oughtred and laid down according to his method formerly published for this very subject : together with twentie one several diagrams or schemes demonstratively shewing the reason and ground-work of all dialling, as also how to know, distinguish and set down the hour-lines for both faces of all planes at one working /
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  5. 5
    Trigonometrie, or, The manner of calculating the sides and angles of triangles : by the mathematical canon demonstrated /
    Other Authors: “...Oughtred, William, 1575-1660...”
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  6. 6
    Clavis mathematicæ denuo limata, sive, Potius fabricata : cum aliis quibusdam ejusdem commentationibus, quæ in sequenti pagina recensentur /
    by Oughtred, William, 1575-1660
    Published 1693
    Microform Book
  7. 7
    Clavis mathematicæ denvo limata, sive, Potius fabricata : cum aliis quibusdam ejusdem commentationibus, quæ in sequenti pagina recensentur /
    by Oughtred, William, 1575-1660
    Published 1667
    Microform Book
  8. 8
    Clavis mathematicæ denyo limata, sive, Potius fabricata : cum aliis quibusdam ejusdem commentationibus, quae in sequenti pagina recensentur /
    by Oughtred, William, 1575-1660
    Published 1652
    Microform Book
  9. 9
    Mr. William Oughtred's Key of the mathematicks /
    Microform Book
  10. 10
    Clavis mathematica denuò limata, sive potius fabricata : cui accedit tractatus de resolutione æquationum qualitercunque adfectarum in numeris : et declaratio tum decimi elementi Euclidis de lateribus incommensurabilibus : tum decimi tertii & decimi quarti elementi de quinque solidis regularibus, atque hic passim logisticæ decimalis, & logarithmorum doctrina intexitur /
    by Oughtred, William, 1575-1660
    Published 1648
    Microform Book
  11. 11
    Trigonometria : hoc est, Modus computandi triangulorum latera et angulos, ex canone mathematico traditus & demonstratus : una cum tabulis sinuum, tangent[ium] & secant[ium] &c. /
    by Oughtred, William, 1575-1660
    Published 1657
    Other Authors: “...Oughtred, William, 1575-1660...”
    Microform Book
  12. 12
    The solution of all sphærical triangles both right and oblique by the planisphare : whereby two of the sphærical partes sought, are at one position most easily found out /
    Microform Book
  13. 13
    Elementi decimi Euclidis declaratio : necnon De solidis regularibus tractatus /
    by Oughtred, William, 1575-1660
    Published 1652
    Microform Book
  14. 14
    Guilelmi Oughtred Ætonensis ... Opuscula mathematica hactenus inedita.
    by Oughtred, William, 1575-1660
    Published 1677
    Microform Book
  15. 15
    Theorematum in libris Archimedis De sphaera & cylindro declaratio /
    by Oughtred, William, 1575-1660
    Published 1652
    Microform Book
  16. 16
    Horologiorum sciotericorum in plano, geometricè solùm, sine calculo trigonometrico, delineandorum, modus facillimus : per quem meridiana, substylaris, & stylus ipse, non investigantur modò, sed etiam, in cuiusvis generis plano, situ proprio inscribuntur omniaque perspicuè demonstrantur /
    by Oughtred, William, 1575-1660
    Published 1652
    Microform Book
  17. 17
    The circles of proportion and the horizontall instrument /
    Microform Book
  18. 18
    Mr. William Oughtred's Key of the mathematicks. Newly translated from the best edition, with notes, rendring it easy and itelligible to less skilful readers. In which also, some problems left unanswer'd by the author are resolv'd.
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  19. 19
    Trigonometrie, or, The manner of calculating the sides and angles of triangles : by the mathematical canon demonstrated /
    by Oughtred, William, 1575-1660
    Published 1657
    Other Authors: “...Oughtred, William, 1575-1660...”
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  20. 20
    The description and use of the double horizontall dyall
    by Oughtred, William, 1575-1660
    Published 1632
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