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 197 for search 'Oughtred, William, 1575-1660', query time: 0.28s 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 ... Opuscula mathematica hactenus inedita

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  3. 3
    The circles of proportion and the horizontal instrument : the former shewing the maner how to work proportions both simple and compound ... : and is newly increased with an Additament for navigation : the later teaching how to work most quaestions, which may be performed by the globe, and to delineat dialls upon any kind of plaine /
    Other Authors: “...Oughtred, William, 1575-1660...”

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  4. 4
    Guilelmi Oughtred Ætonensis ... Opuscula mathematica hactenus inedita

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  5. 5
    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 /

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  6. 6
    Clavis mathematicæ denvo limata, sive, Potius fabricata: cum aliis quibusdam ejusdem commentationibus, quæ in sequenti pagina recensentur /

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  7. 7
    To the English gentrie, and all others studious of the mathematicks : which shall bee readers hereof. The just apologie of Wil: Oughtred, against the slaunderous insimulations of Richard Delamain, in a pamphlet called Grammelogia, or the mathematicall ring, or mirisica logarithmorum projectio circularis

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  8. 8
    Mr. William Oughtred's Key of the mathematicks : newly translated from the best edition vvith notes, rendring it easie and intelligble [sic] to less skilful readers : in which also, some problems left vnanswer'd by the author are resolv'd. : absolutely necessary for all gagers, surveyors, gunners, military-officers, mariners, &c. /

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  9. 9
    The circles of proportion and the horizontall instrument &c. Both invented, and the uses of both written in Latine by W. Oughtred Ætonens. Translated into English and set forth for the publique benefit by W.F. And now by the authors consent, revised, corrected, and freed from all mistakes in the former editition [sic]: and also much amplifyed and explained, by A.H. Gent

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  10. 10
    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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  11. 11
    The description and use of the double horizontall dyall

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  12. 12
    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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  13. 13
    Clavis mathematicæ denuo limata, sive, Potius fabricata: cum aliis quibusdam ejusdem commentationibus, quæ in sequenti pagina recensentur /

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  14. 14
    Clavis mathematicæ denyo limata, sive, Potius fabricata: cum aliis quibusdam ejusdem commentationibus, quae in sequenti pagina recensentur /

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  15. 15
    Mr. William Oughtred's Key of the mathematicks/

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  16. 16
    Theorematum in libris Archimedis De sphaera & cylindro declaratio

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  17. 17
    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 /

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  18. 18
    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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  19. 19
    Trigonometria: hoc est, Modus computandi triangulorum latera et angulos, ex canone mathematico traditus & demonstratus : una cum tabulis sinuum, tangent[ium] & secant[ium] &c. /
    Other Authors: “...Oughtred, William, 1575-1660...”

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  20. 20
    The key of the mathematicks new forged and filed : together with a treatise of the resolution of all kinde of affected æquations in numbers : vvith the rule of compound usury, and demonstration of the rule of false position : and a most easie art of delineating all manner of plaine sun-dyalls /

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