Babbage c charles (2 resultados)
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Librería: Herman H. J. Lynge & Søn ILAB-ABF, Copenhagen, DinamarcaHerman H. J. Lynge & Søn ILAB-ABF
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Añadir al carrito(London, W.Nicol, 1826). 4to. No wrappers as extracted from "Philosophical Transactions" 1826 - Part III. Pp. 484-493 a. pp. 494-528 a. 1 engraved plate. The plate dampstained in upper margin, outside image. Clean and fine. These two important papers were presented to The Royal Academy at the same date, and stitched together fro…m the Transactions.In his paper FARADAY observes importent relations between tension, pressure, temperature and gravitation as he proves that any kind of matter, not only air, ceases to assume the elastic form, whenever the gravitation of its particles is stronger than the elasticity of its vapour. The loss of tension necessary for effecting this object may be accomplished in two ways, either by extreme dilatation, or by cold.The paper by BBBAGE is the second of two papers on electromagnetism, the first written together with his friend J.F.W. Herschel."The curious phenomena of electromagnetism were beginning to be discovered during this period, and inevitably Babbage took an interest. In the spring of 1825 Gay Lussac visited London and described Arago's experiments with rotating discs. Plates of copper and other substances set in rapid motion in a magnetic field and under a magnetized needle caused it to deviate from its direction, finally dragging it round with them. At this time Herschel was secretary of the Royal Society and had rooms in Devonshire Street. Babbage and he carried out some quite extensive experiments in Babbage's house. They tried the effect with discs of many different substances using Babbage's lathe: only metals and graphite showed the effect and they concluded that the conductivity of the disc was the importent point.however they did not solve the problem of electromagnetic induction: æater their friend Michael Faraday did."(Hyman in "Charles Babbage. Pioneer of the Computer", p.58). - Babbage's first paper on electrical and magnetic rotation is listed by Hook & Norman :35, but not the paper offered.
An Essay towards the calculus of functions. Communicated by W.H. Wollaston. Read June 15, 1815. (+) An essay towards the calculus of functions. Part II. Communicated by W.H.Wollaston. Read March 14, 1816. (2 Papers).
"BABBAGE, C. (CHARLES). - CREATING A NEW BRANCH OF MATHEMATICS.
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Librería: Herman H. J. Lynge & Søn ILAB-ABF, Copenhagen, DinamarcaHerman H. J. Lynge & Søn ILAB-ABF
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Añadir al carrito(London, W. Bulmer and Co., 1815 and 1816). 4to. No wrappers as extracted from "Philosophical Transactions" 1815 - Part I. and 1816 - Part II. Having both titlepages to the parts. Pp. (2),389-446 and (2),179-256. First titlepage with a stamp on verso. Otherwise fine and clean. First printings of Babbage's main mathematical contr…ibutions."Babbage's major Contribution to mathematics was his calculus of functions, which he became interested in as early as 1809 and continued to develop during his years at Cambridge. Babbage presents his major ideas on the subject in the above two papers, published in the "Philosophical Transactions" in 1815 and 1816. "It can be said with some assurance that no mathematician prior to Babbage had treated the calculus of functions in such systematic way.Babbage must be given full credit as the inventor of a distinct and importent branch of mathematics" (Dubbey 1978, 90). Elsewhere Dubby states that his new scheme would serve as a generalized calculus to include all problems capable of analytical formulation, and it is possible to see here a hint of the inspiration for his concept of THE ANALYTICAL ENGINE. While the work on the engines and his other scientific, social and political activities caused him virtually to abandon mathematical research at the age of thirty, the calculus of functions was the area he often yearned to continue. In fact the calculus of functions was not taken up by other workers, and it is the aspect of Babbage's mathematical work that modern mathematicians find most fascinating (Dubbey 1989, 18-19)." (Hook a. Norman No. 19).Charles Babbage, William Herschel and George Peacock founded in 1810 in Cambridge the "Analytical Society", at Trinity College in order to reform the notation and the teaching of mathematics in England, introducing Leibniz' differential notation instead of Newton's fluxions. The continental texts and papers then became accessible to English students.