Gulielmus Oughtred Anglus (frontispiece from Oughtred's "The Key of the Mathematicks New Forged and Filed," 1647) 1646 Wenceslaus Hollar Bohemian This hallf-length portrait of the rector and mathematician, William Oughtred, shows the sitter at seventy-three, wearing a skull-cap, collar and gown, and holding a book. He is credited with creating the slide rule in 1622, which allowed for direct multiplication and division, with introducing "x" to signify mulplification, and the abbreviations "sin" and "cos" for sine and Gulielmus Oughtred Anglus (frontispiece from Oughtred's "The Key of
Gulielmus Oughtred Anglus (frontispiece from Oughtred's "The Key of the Mathematicks New Forged and Filed," 1647) 1646 Wenceslaus Hollar Bohemian This hallf-length portrait of the rector and mathematician, William Oughtred, shows the sitter at seventy-three, wearing a skull-cap, collar and gown, and holding a book. He is credited with creating the slide rule in 1622, which allowed for direct multiplication and division, with introducing "x" to signify mulplification, and the abbreviations "sin" and "cos" for sine and Gulielmus Oughtred Anglus (frontispiece from Oughtred's "The Key of the Mathematicks New Forged and Filed," 1647) 360639
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