L s germain (17 Ergebnisse)

Paperback. Zustand: Very Good. Second. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Paperback. Zustand: Good. No Jacket. Former library book; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Paperback. Zustand: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Zustand: Good. 2nd Edition. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Zustand: Good. 2nd Edition. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.…

Zustand: Very Good. 2nd Edition. Pages intact with possible writing/highlighting. Binding strong with minor wear. Dust jackets/supplements may not be included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Paperback. Zustand: Brand New. 246 pages. 9.00x6.00x0.62 inches. In Stock.

Paperback. Zustand: Brand New. 218 pages. 9.00x6.00x0.55 inches. In Stock.

Zustand: Very Good. Pages intact with possible writing/highlighting. Binding strong with minor wear. Dust jackets/supplements may not be included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Paperback. Zustand: Brand New. 2nd edition. 251 pages. 10.00x7.00x0.50 inches. In Stock.

Taschenbuch. Zustand: Fine. 1. minor wear---. nein.

Lithograph, from "Iconographie des Contemporains depuis 1789 Jusqu'a 1829".

No Binding. Zustand: Very Good. A fine original hand coloured engraving. Not contemporary colouring, but delicately and expertly executed. Mounted and ready to frame. Very good condition. Attractive and decorative . Circa 1840.

Couverture rigide. Zustand: bon. RO30026883: non daté. In-12. Cartonnage d'éditeurs. Etat d'usage, Plats abîmés, Dos satisfaisant, Quelques rousseurs. 464 pages. . . . Classification Dewey : 372.6-Livre scolaire : français.

Metz, Les Arts Graphiques, 1928. In-8 br., 115 pp., 3 pl. h.-t. /81B Dos passé, bon état par ailleurs.

Zustand: Bueno. 4º, XV+608 p, holandesa piel rozada, pequeña rasgadura en el lomo.Papel tostado.DEDICATORIA MANUSCRITA DEL TRADUCTOR A AMADOR DE LOS RÍOS EN PORTADILLA.Obra dividida en tres ensayos que recogen la historia social y política, la producción intelectual y la dispersión última de los judíos españoles.…

Paris, Fortin, Masson et Cie, 1840. Contemp. hcloth. Gilt lettering to spine. In "Annales de Chimie et de Physique", 2me Series - Tome 75. 447,(1) pp. a. 1 plate. (Entire volume offered). Hess's paper: pp. 80-103. The first and last leaves somewhat brownspotted. First edition in French of Hess' first fundamental law in thermodynamic: "the law of heat formation" (1840), anticipating a specific example of the "LAW OF THE CONSERVATION OF ENERGY", 2 years before Julius Robert Mayer elucidated the more general principle in 1842 - claiming that "the heat developed in chemical change is constant, whether the change occurs directly or indirectly in several stages"Germain Henri Hess is noted today for two fundamental principles of thermochemistry: the law of constant summation of heat (known simply as Hess's law) and the law of thermoneutrality. These discoveries were remarkable in that they were postulated without any supporting theoretical framework and took place in a field of study almost totally neglected by his contemporaries. Hess's law is of immense practical importance and is used to this day to determine heats of reaction when their direct measurements are difficult or impossible. (Chemistry Encyclopedia)."Numerous men, notably Lavoisier and Laplace had measured the heats evolved in various reactions, but thermochemistry received its first importent advance at the hands ofgermain Henri Hess, who showed that the heat evolved in a reaction is the same regardless of whether the reaction is carried out directly or in a number of steps. This generalization, known now as "Hess's Law", makes possible the calculation of heats for many reactions where direct measurement are impracticable."(Leicester & Klickstein, A Source Book., p329."The thermochemical work of Hess was continued extensively in the second half of the nineteenth century through the studies of Thomsen and Berthelot. Both Berthelot?s principle of maximum work and the thermodynamic theories of affinity which came to prevail were clearly foreshadowed in the work of Hess. In addition to his internationally known research in thermochemistry, Hess was very influential in the development of chemistry in Russia. His text Osnovania chistoy khimii (Fundamentals of Pure Chemistry) went through seven editions and did much to establish the chemical nomenclature of the Russian language. He was always interested in technological questions, and many of his students later contributed to Russia?s industrial development." (DSB).Parkinson "Breakthroughs", 1840 C. - Leicester & Klickstein, A Source Book, p 329. …