A History of the Logarithmic Slide Rule by Florian Cajori

By Florian Cajori

The slide rule, with its many diversifications, has been important to arithmetic and engineering because its invention within the seventeenth century. curiosity during this box has grown dramatically and creditors can nonetheless locate a lot fabric at cheap costs. regrettably there was little info on hand aside from brands manuals and catalogs, making this reprint of Cajori's vintage rather important. additionally incorporated with this reprint of the 1910 version is Cajori's huge article at the historical past of Gunter's Scale and the Slide Rule in the course of the seventeenth Century, released via the collage of California in 1920, which units forth his next findings. there's additionally a priceless explanatory creation by way of Dr. Robert okay. Otnes, editor of the magazine of the Oughtred Society. 178 pages. Illustrated. 61/8" x 91/4". demanding disguise.

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At the close of the last century, the Mannheim rule was known wherever instruments of this class were in use. Mannheim is the first who succeeded in popularizing the use of the runner. The runner enables one to read corresponding numbers on scales that are not contiguous and also to compute the value of complex expressions without the necessity of reading intermediate results of computation. In England, where the runner was first invented nearly 200 years earlier, it met with slower adoption than in 1 See C.

P. 512, from Catalogue of Instruments manufactured by W. F. , London, 1577, p. 30. See also W. H. ] 76. Mount, Règle Logarithmique pour la Tachéométrie. [Cited by Favaro, loc. , p. 512, from Leves de Plans et la Stadia. Notes pratiques pour études de tracés par I. Moinot. Troisième édition, Paris, 1877, p. 41—67. , Paris, 1905, p. ] 77. Boucher Calculator. , Manchester, London, New York, 1906, p. 93. Manufactured by W. F. , Holborn, London. It is a circular slide rule with two dials. Is made by H.

12, 1889—1890, p. 34; Encyclopedia d. Math. , Vol. I, Leipzig, 1898—1904, p. ] 127. Renaud-Tachet, Règle Circulaire. [M. , Paris, 1905, p. 121; Génie civil, 21 Janvier, 1893, p. ] 128. Clouth Rechenscheibe. [F. M. Clouth, Anleitung zum Gebrauch der Rechenscheibe, Hamburg, 1872; Dyck’s Katalog, Nachtrag, p. 3, Nr. 11 d; Encyklopädie d. Math. , Ed. I, Leipzig, 1898—1904, p. ] 129. F. J. Vaes, Règle pour la Traction des Locomotives. [M.

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