Compasses (4 Ergebnisse)

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Antwerpen, Société des Bibliophiles Anversois, Vereeniging der Antwerpsche Bibliophielen , ( periodical ) , format in-8° (a few issues in-4° ), normally 4 issues per year, but later irregular as a yearbook or volumes covering several years, ca. 150-300 pp per year, most issues sewn or bound as published. The first vol. (1923) bound in halfcloth. Publication started in 1923 (year 1- volume I). Still in publication. AVAILABLE: Complete set in original wrappers or cloth bindings, as published. Ffrom year (1)(1923) up to year (95)(2017) . Complete set in fine condition ( some issues with minimal traces of use or slight stains, as can be expected for such a long run). The '' Gulden Passer '' or Golden Compasses was the device of the Plantin Press. This publication, closely related to the Plantin Museum of Antwerp, deals with the history of this printing press, one of the most important of 16th-century Europe and the only one to survive intact into the 21st century. ( Unesco world heritage site). The periodical covers all aspects of the history of 16th-18th c. publishing and printing at the Plantin Press, including Antwerp and the Low Countries. It contains many articles on 16th-century European humanistic culture as Plantin was one of the pivotal figures north of the Alps. Some yearbooks are complete studies in itself. E.g. Year 1933 which contains the Peeters-Fontainas bibliography of Spanish imprints from the Southern Low Countries, 1983-1985 which is the Liber Amicorum for Professor Leon Voet, for many years the curator of the museum Plantin-Moretus, 1988-89 Studia in Memoriam C. Plantini , 2002 an exhaustive study on the library of P.P. Rubens ; on Justus Lipsius and Plantin.The periodical is still in publication. A complete set is very difficult to assemble. Especially the pre-war issues are hard to find (they were already in the 1960's reprinted by Kraus Reprint. Even this reprints are scarce.…

Paris, Moutard, Panckoucke, 1780. 4to. Extract from "Mémoires fe Mathematique et de Physique, Présentés à l'Academie des Sciences par divers Savans", Tome IX. With titlepage to vol. IX. Pp. (2), (167-) 264 and 4 folded engraved plates. The memoir has also its own titlepage. Fine and clean. Wide-margined. First printing of this monumental memoir (the invention of the TORSION BALANCE) dealing with the best way to construct a magnetic compass. The paper contains the design of a torsion suspension declination compass and the demonstration that the forces of torsion is proportional to the angle of twist. Coulomb received the prize awarded by the Academy for this paper drafted by the Academy in 1777 (he shared the prize with Van Swinden). - "The importance of this memoir for Coulomb's career is that it CONTAINED ELEMENTS OF ALL HIS MAJOR PHYSICAL STUDIES: the quantitative study of magnetism, torsion and the torsion balance, friction and fluid resistance, and the germ of his theories of elasticity and magnetism."(DSB)."Coulomb?s first writings on torsion were presented in his Academy prize-winning memoir of 1777, "Recherches sur la meilleure maniere de fabriquer les aiguilles aimantées.". his simple, elegant solution to the problem of torsion in cylinders and his use of the torsion balance in physical applications were important to numerous physicists in succeeding years. In chapter 3, Coulomb developed the theory of torsion in thin silk and hair threads. Here he was the first to show how the torsion suspension could provide physicists with a method of accurately measuring extremely small forces. He showed that within certain angular limits, torsional oscillation consisted of simple harmonic motion. He examined the parameters relating the angle of twist to the length, diameter, and elastic properties of the torsion thread. In the range of simple harmonic oscillation Coulomb demonstrated that the force of torsion was proportional to the angle of twist. He used this principle in measuring small magnetic forces and also called attention to its use in measuring other forces, notably those of fluids in motion. Eventually he was able to measure forces of less than 9 x 10-4 dynes."Coulomb?s major memoirs in electricity and magnetism are his 1777 memoir on magnetic compasses, the famous series of seven electricity and magnetism memoirs read at the Academy from 1785 to 1791, and several magnetism memoirs prepared after the French Revolution. In his electrical studies Coulomb determined the quantitative force law, gave the notion of electrical mass, and studied charge leakage and the surface distribution of charge on conducting bodies. In magnetism he determined the quantitative force law, created a theory of magnetism based on molecular polarization, and introduced the idea of demagnetization (basically, that combinations of magnetic poles can "cancel" each other)."(DSB).Parkinson "Breakthroughs": 1777:P. …