niels bjerrum (9 Ergebnisse)

Zustand: Good. 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. Some shelfwear, some foxing/staining to external areas of the book. Edges are slightly torn in places. Content has inscription to the inside cover but is clean and readable inside.

Zustand: New. In.

208 S., mit 21 Fig. u. 117 Tab., Priv. HLn., geringe Gebrauchsspuren, Bibliotheksex., Klebezettel u. eingepr. Inv.-Nr. auf RüSchwanz, Innentit. mehrf. gestemp. m. hs. Verm., im Text einige Unterstreich. u. hs. Marginalien.

orig.wrappers Rubbed. Wrapper edges frayed. One page has a tear to margin.Good 24x15cm, 208 pp, Series: Det. Kgl. Danske Videnskabernes Selskab, Mathematisk-fysiske Meddelelser, IX, 1. Full title reads: "Elektrometrische messungen mit wasserstoffeletroden in mischungen von sauren und basen mit salzen : Die Dissoziationskonstanten von Wasser, Phosphorsäure. Citronensäure und Glycin". Contents: Untersuchungen über Kalomelektroden; Untersuchungen über Flü ssigkeitespotentiale; Messungen in Mischungen von Salzsäure und Alkalichloriden; Messungen in Natriumhydroxyd und Kaliumhydrioxyd. Die Dissoziationskonstante des Wassers; Messugnen in Phosphatgemischen: Die Dissoziationskonstanten der Phosphorsäure; Messungen in Citratgemischen: Die Dissoziationskonstanten der Citronensä ure; Messungen in Glycinlö sungen: Die Dissoziationskonstanten des Glycins. Rubbed. Wrapper edges frayed. One page has a tear to margin.Good.

Ber. Dtsch. Chem. Ges., 42/3. - Berlin, Kommissionsverlag von R.Friedländer & Sohn, 1909, 8°, pp.4941-470, 1 feine Portraitlichtdrucktafel, Broschur. Hans Peter Jørgen Julius Thomsen 1826-1909 Danish chemist, he worked in the field of thermochemistry. In particular, between 1869 and 1882, he carried out a great number of determinations of the heat evolved or absorbed in chemical reactions, such as the formation of salts, oxidation and reduction, and the combustion of organic compounds.

Taschenbuch. Zustand: Neu. Kurzes Lehrbuch der Anorganischen Chemie | Niels Bjerrum (u. a.) | Taschenbuch | xii | Deutsch | Springer | EAN 9783642892912 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Zustand: very good. Edited by friends and coworkers on the occasion of his 70th birthday, the 11th of March, 1949. Copenhagen : Einar Munksgaard, 1949. Hardcover. 295 p. : ill., graf., tab., portr. ; 25 cm. English text. Rare. Library stamp. - Collection of papers of Niels Janniksen Bjerrum (1879-1958), a Danish chemist. Bjerrum introduced the concept of three forms of molecular energy, translational, vibrational and rotational which was important in understanding vibrational spectroscopy.[2] He is also noted for the theory behind the Bjerrum length, and the Bjerrum plot. Bjerrum also performed some of the first research on the measurement of soil acidity. He also contributed to the Bohr Model of the atom. Bjerrum worked with Nernst in Berlin and contributed to chemical physics in four papers (1911-1914). The subject of the papers is the kinetic and quantum theories through absorption measurements in the infrared to elucidate the constitution and the optical and thermal properties of matter. He advanced the studies of specific heat that had been made for solids by Albert Einstein, Walther Nernst, and Lindemann. He showed the connection of specific heats and the spectrum as required by the quantum theory. Using the quantum hypothesis, the infrared absorption spectra of water vapor were shown to link to the line broadening caused by molecular rotational frequencies that vary discontinuously and to radiating atoms that do not rotate. This phenomenon was mentioned by Niels Bohr as contributing greatly to his 1913 model of the atom because it provided agreement with specific heat investigations which suggested that the rotational energy of atoms must be very small.[ Condition : very good copy. Keywords : SCIENCE, chemistry Bjerrum, Niels Janniksen (1879-1958),

(26 x 20 cm). 76 (1) S. Rückenbroschur. (Sonderdruck aus: Det Kongelige Danske Vidensk. Selskabs skrifter). Erste Ausgabe dieser bedeutenden Arbeit. - "The function of the thiocyanate group as a ligand in chromium and gold compounds was the subject of two significant papers of 1915 and 1918. In the second paper Bjerrum and Aage Kirschner proposed a sequence of reactions that explained the overall complex kinetics of the aqueous decomposition of dithiocyanogen - a compound the preparation of which from nonaqueous solution was first accomplished by Erik G. Söderbäeck in 1919" (DSB). - Sauber und wohlerhalten. - DSB 2, 169.