R h helmholtz (10 resultados)

Paperback booklet. Good condition. 22pp.

Condición: Good. Envoi rapide bon état intérieur propre. 15 6x1 35x23 39cm. 2008. Broché. 256 pages. Il s'agit d'une édition critique et commentée publiée en 1977 de la sélection d'écrits épistémologiques d'Hermann von Helmholtz initialement compilée par Paul Hertz et Moritz Schlick en 1921 pour le centenaire de la naissance de Helmholtz. L'ouvrage comprend une nouvelle traduction en anglais une introduction des notes des éditeurs et une bibliographie visant à honorer Helmholtz et à remettre ses contributions ainsi que celles de Schlick et Hertz dans le débat méthodologique contemporain. Good.…

Condición: gebraucht; sehr gut. Minimale Lagerspuren, textsauber und gepflegt. Volume 79.

Condición: As New. Unread book in perfect condition.

Condición: New.

Condición: gut. Epistemological Writings: The Paul Hertz/Moritz Schlick centenary edition of 1921, with notes and commentary by the editors (Boston Studies in the Philosophy and History of Science, 37, Band 37) In deutscher Sprache. pages.

Milano 1991. Toile éd. vii,404 pp. (St.del Not.1).

Condición: Good. Leipzig 1881 first edition. Barth. Hardcover octavo. 3/4 black leather with patterned deep dark purple clothcovered boards. Raised spine bands. 712p. 6 plates. Includes: Helmholtz "Ueber eine electrodynamische Wage"; Clausius "Ueber die theorestische Bestimmung des Dampfdruckes" p. 279-290; Hertz "Obere Grenze fuer die kinetische Energie der bewegten Electricitat", p. 581-90 and pp. 692-704. Good Plus, text clean and binding solid; cover tips and spine end worn; college bookplate. …

Berlin, G. Reimer, 1847. Contemp. hcalf, profusely gilt spine. Light wear along edges. XXXII,622 pp. In: "Fortschritte der Physik im Jahre 1845. Dargestellt von der physikalischen Gesellschaft zu Berlin". I. Jahrgang. Redigirt von G. Karsten. XXXII,622 pp. A stamp on titlepage. Helmholtz's paper: pp. 346-355. Clean and fine. First appearance of this milestone paper which represents the first, and most importent, step towards his great work laid down in "Über die Erhaltung der Kraft", 1847. This is Helmholtz' FIRST PAPER ON THE CONSERVATION OF FORCE"At the beginning of October, 1846, Helnmholtz sent a 'Report on Work done on the Theory of Animal Heat for 1845', at du Bois' request, to the "Fortschritte der Physik", issued by the Physical Society. (the paper offered). This was merely an abstract from the article in the Encyclopaedic Dictionary.BUT IT ANTICIPATES MORE DEFINITELY THE CONDCLUSIONS OF HIS GREAT WORK. He states without hesitation that the material theory of heat is no longer tenable, and that a kinetic theory must be substituted for it, since heat originates in mechanical forces, either directly by friction, or indirectly from an electrical current produced by themotion of magnets. This conception of heat as a motion involves the conclusion that mechanical, electrical and chemical forces must always be the definite equivalent of one and the same energy, whatever the mode by which one force is transformed into another. The empirical confirmation of this law must be the imperative duty of physicists and physiologists."(Leo Koenigsberger in "Hermann von Helmholtz", pp. 34-35)."In the "Fortschritte der Physik" for 1845, which appeared in 1847, Helmholtz published a report on theories of physiological heat which he later acknowledged as belonging to his work on the conversation of force."(Jungnickel & McCormach "Intellectual Masteryof Nature, Vol. 1, p. 157). …

Leipzig, Johann Ambrosius Barth, 1853-54. No wrappers. "Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff", Vol. 89, No 8 and vol. 91 No 2 a. 4. Pp. 497-628, pp. 161-320 a. pp. 497-628 a. 1 folded plate. (3 entire issues offered). Clausius's papers pp. 568-579 (vol. 89, "Heft" 8) a. pp. 601-604 (vol. 91,"Heft" 4). Helmholtz paper: pp. 241-260 (vol. 91, "Heft" 4). With titlepages to both volumes 89 a. 91. All three issues clean and fine. First printing of the 3 main papers in the famous Helmholtz-Clausius controversy about the principle of the "Conservation of Energy". His reply to Clausius contains very importent additons to his conservation law, as it clarifies his use of the concepts of "energy", "vis viva", "electrical tension" , "potentials" etc.Helmholtz famous work Über die Erhaltung der Kraft" from 1847 gave the first comprehensive statement of the first law of thermodynamics: All modes of energy, heat, light, electricity, and all chemical phenomena, are capable of transformation from one to the other but are indestructible and cannot be created. Clausius (in the papers offere) critized helmholtz on his theory of heat over the consistency of the physical interpretation and of the use mathematics. He argued that Helmholtz's demonstration of his conservation law was valid only for Helmholtz's particulat model of matter, and that he had not understood the notion of the potential. This criticism lead Helmholtz expand and clarify the central concepts of physics, importent steps in the history of theoretical physics. …