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William Oughtred (5 March 1574 – 30 June 1660), [1] also Owtred, Uhtred, etc., was an English mathematician and Anglican clergyman. [2] [3] [4] After John Napier discovered 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 ...
His earliest published work Grammelogia was dedicated to Charles I.It was attacked in William Oughtred's Circles of Proportion (1631), on grounds of plagiarism: Oughtred had taught Delamaine, and considered that the work simply reproduced his mathematical instruments without any serious understanding of the theory on which they depended. [1]
Clavis mathematicae (English: The Key of Mathematics) is a mathematics book written by William Oughtred, originally published in 1631 in Latin.It was an attempt to communicate the contemporary mathematical practices, and the European history of mathematics, into a concise and digestible form.
In 1630, William Oughtred of Cambridge invented a circular slide rule, and in 1632 combined two handheld Gunter rules to make a device that is recognizably the modern slide rule. Like his contemporary at Cambridge, Isaac Newton , Oughtred taught his ideas privately to his students.
William Forster (fl. 1630–1673) was an English mathematician living in London, a pupil of the celebrated mathematician and astronomer clergyman William Oughtred (1574-1660). [1] He is best known for his book, a translation and edition of Oughtred's treatise entitled The Circles of Proportion .
Oughtred Society Slide Rule Reference Manual (PDF). Oughtred Society. Archived (PDF) from the original on 26 April 2021. Harris, Charles Overton (1972). Slide Rule Simplified. Chicago: American Technical Society. ISBN 978-0-8269-2342-4. Young, Neville W. (1972). A Complete Slide Rule Manual. David M. Peterson. Archived from the original on 25 ...
Ralph Greatorex (c. 1625–1675) [1] was an English mathematician, mathematical instrument maker, and an apprentice of London clockmaker Elias Allen. [1]Greatorex is mentioned in John Aubrey's Brief Lives as a great friend of William Oughtred the mathematician. [2]
In 1682 he published his expansion of William Oughtred's Clavis Mathematica with the title Oughtredus explicatus, with part i. dedicated to Isham, part ii. to Sir Walter Chetwynd. In this work Clerke spoke of his invention of the spot-dial. He published his Description of it in 1687, this being the only work he wrote in English. [2]