‎KOECHLIN De BIZEMONT Dorothée-Marguerite‎
‎Balance‎

‎World Water Balance and Earths Water Resources World Water Balance And Water Re‎

‎World Water Balance and Earths Water Resources World Water Balance And Water Resources Of The Earth. Atlas of the World Water Balance. In Russian /Mirovoy vodnyy balans i vodnye resursy Zemli World Water Balance And Water Resourses Of The Earth. Atlas mirovogo vodnogo balansa. Komplekt. Monograph and Appendix. Editorial Board: Korzun V.I., Sokolov A.A., Budyko M.I., Voskresensky K.P., Kalinin G.P., Konoplyantsev A.A., Korotkevich E.S., Kuzin P.S., Lvovich M.I. Main Directorate of Hydrometeorological Service under the SM USSR. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalbb329b62a03425ef4.‎

‎N. G. Filimonov Balance Sheet Science and Balance Sheet. Industrial Accounting.‎

‎N. G. Filimonov Balance Sheet Science and Balance Sheet. Industrial Accounting. A Brief Essay on the Commercial Organization of Factories and Plants. In Russian (ask us if in doubt)/Filimonov N. G. Balansovedenie i balans. Promyshlennoe schetovodstvoN. G. Filimonov Balance Sheet Science and Balance Sheet. Industrial Accounting. A Brief Essay on the Commercial Organization of Factories and Plants. In Russian (ask us if in doubt)/Filimonov N. G. Balansovedenie i balans. Promyshlennoe schetovodstvo. Kratkiy ocherk komercheskoy organizatsii fabrik i zavodov.Moscow Fin Publishing House NKF USSR 1928 148p. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalbe39015344c582f93‎

‎Recherches sur la meilleure Manière de fabriquer les Aiguilles Aimantées, de les suspendre, de s'assurer quelles sont dans le véritable Méridian magnétique: enfin de rendre raison de leurs Variations diurnes régulières: Pièce qui a partae le Prix p... - [THE PRIZE-WINNING PAPER ON MAGNETIC COMPASSES INTRODUCING THE TORSION BALANCE]‎

‎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

‎World Water Balance and Water Resources. Earth. Atlas of World Water Balance: M‎

‎World Water Balance and Water Resources. Earth. Atlas of World Water Balance: Maps of 65 sheets. World Water Balance and Water Resources of the Earth In Russian /Mirovoy vodnyy balans i vodnye resursy. Zemli. Atlas Mirovogo vodnogo balansa: Karty 65 listov.Mirovoy vodnyy balans i vodnye resursy Zemli Editorial Board: Korzun V.I. Candidate of Geoscience (prev.) and others: Head of Hydrometeorological Service under the Council of Ministers of the USSR. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalbf12c935fe015ecc0.‎

‎La balance à calcul - Un nouveau moyen de simplifier les calculs mathématiques (Machines à calculer)‎

‎Gauthier-Villars Malicorne sur Sarthe, 72, Pays de la Loire, France 1928 Book condition, Etat : Bon broché, sous couverture imprimée éditeur grise grand In-8 1 vol. - 19 pages‎

‎1 grande planche dépliante en fin d'ouvrage avec des logarithmes de la balance à calculer de Stanislas Millot 1ere édition, 1928 Contents, Chapitres : Historique - Principe de la balance à calcul - Règle générale d'emploi de la balance à calcul - Echelles en plusieurs parties - Echelles usuelles - Echelle des nombres - Echelle des sinus - Echelle des tangentes - Echelle de s logarithmes - Echlle de En - Avantage de la balance à calcul couverture très propre avec d'infimes traces de pliures aux coins des plats, intérieur sinon frais et propre, papier légèrement jauni, cela reste un bon exemplaire, bien complet de la planche dépliante - cachet de géomètre sur la première page‎