William Oughtred (1575-1660),English mathematician,holding a book. Oughtred was educated at Eton College and later at Cambridge University,England. He was ordained as a priest in 1603. His clerical post gave him time to work on mathematics. In 1631 he published the Clavis mathematicae (the key to mathematics). Oughtred also introduced a number of mathematical symbols,such as the 'x' for multiplication and the sin and cos notation for trigonometry. He also invented the circular slide rule and the rectilinear slide rule | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Royal Astronomical Society |
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