stas j s (15 Ergebnisse)

Zustand: Fair. Volume 2. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. In fair condition, suitable as a study copy. Paperbound with small tears to the cover. Pages are uncut. 1 plate illustration. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,2250grams, ISBN:

DUMAS (J.-B.), STAS (J.-S.), BOUSSINGAULT (J.-B.).L'air, l'acide carbonique et l'eau.Mémoires précédés d'une notice biographique par H. Le Chatelier.2e éd.P., 1930, pet. in-8°, br., 4planches dépl. 250 gr.

Zustand: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. No dust jacket. 8vo. Brown 1/4 leather bound. Torn and loose backstrip. Gilt lettering on backstrip. Library sticker on front end page. Foxing throughout. Library stamp on title page. Handwriting near title page. Internally clean and clear. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,300grams, ISBN:

Hardcover. Zustand: Very Good. Variously paginated. Ex-library, with library markings including cancellation stamp at upper fore-corner of front pastedown, ghost of a bookplate at front pastedown, call number in pencil at verso of title page, accession number in ink at foot of following page, cancellation stamp, ghost of barcode label, and ghost of card pocket at rear pastedown. Black quarter cloth over paste-paper-covered boards sturdy, edges worn; library markings as noted, else contents age-toned but unmarked and very good. 2180 grams.

Original-Papp-Einband, (12) 347 Seiten, mit einer gefaltenen Tafel, zahlreichen Abbildungen und Tabellen - ohne Rücken - Einband leicht fleckig und bestoßen - sonst gut erhalten. // Wir, das Antiquariat Steffen Völkel, kaufen und verkaufen alte Bücher, Handschriften, Zeichnungen, Autographen, Grafiken und Fotografien. Wir sind stets am Ankauf von kompletten Bibliotheken, Sammlungen und Nachlässen interessiert. Sprache: Deutsch Gewicht in Gramm: 550.

47pp., publié dans et extrait de "Mémoires couronnés et mémoires des savants étrangers publiés par l'Académie Royale des sciences, des lettres et des beaux-arts de Belgique" Tome XLIX (49), in-4, non coupé, W57631.

(23 x 16 cm). XII, 347 S. Mit 23 Abbildungen und 1 mehrfach gefalteten Tafel. Etwas späterer Pappband. Erste deutsche Ausgabe seiner "Nouvelles recherches." (1865) in die auch die Untersuchungen seiner "Recherches." (1860) mit eingearbeitet sind. - Stas (1813-1891), Professor für Chemie an der Militärakademie in Brüssel, bewies durch seine Atomgewichtsbestimmungen mehrerer Elemente mit einer über 3 Jahrzehnte unübertroffenen Genauigkeit die Unrichtigkeit der Proutschen Hypothese. "In 1860 he published his main work, 'Recherches.' a study devoted to a number of elements. that were considered by Dumas to support Prout's hypothesis. In this work Stas demonstrated that the values of the atomic weights he had determined were neither multiples of unity, nor of one half, as Marignac believed, nor of one quarter, as Dumas maintained. In three papers collectively entitled 'Nouvelles recherches.' Stas presented the results of an extensive series of experiments devoted to the new dimension. By painstaking and accurate measurements he established that atomic weights were incommensurable, thereby disproving the facile conclusion that discrepancies with whole-number values were due merely to experimental errors" (DSB). - Stempel auf Schmutztitel. Vorsätze und Einband minimal fleckig, sonst gut erhalten. - DSB 12, 619; Partington IV, 877; Poggendorff III, 1282; Bolton 850.

(28 x 21,5 cm). (2) 311 S. Mit 23 Abbildungen und 1 gefalteten lithographierten Tafel. Moderner Halblederband. Erste Ausgabe mit handschriftlicher Widmung des Verfassers. - Stas (1813-1891), Professor für Chemie an der Militärakademie in Brüssel, bewies durch seine Atomgewichtsbestimmungen mehrerer Elemente mit einer über 3 Jahrzehnte unübertroffenen Genauigkeit die Unrichtigkeit der Proutschen Hypothese. "In 1860 he published his main work, 'Recherches.' a study devoted to a number of elements. that were considered by Dumas to support Prout's hypothesis. In this work Stas demonstrated that the values of the atomic weights he had determined were neither multiples of unity, nor of one half, as Marignac believed, nor of one quarter, as Dumas maintained. In three papers collectively entitled 'Nouvelles recherches.' Stas presented the results of an extensive series of experiments devoted to the new dimension. By painstaking and accurate measurements he established that atomic weights were incommensurable, thereby disproving the facile conclusion that discrepancies with whole-number values were due merely to experimental errors" (DSB). - Sauber, breitrandig und wohlerhalten. - DSB 12, 619; Partington IV, 877.

Paris, Victor Masson et Fils, 1866. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Wear to top of spine. Small stamps on verso of titlepage. In "Annales de Chimie et de Physique", 4ieme Series - Tome IX. 528 pp., 2 folded plates. (The entire volume offered). Stas' paper: pp. 215-243. Internally clean and fine. First French printing of Stas's importent (first) paper in which he demonstrates the incommensurability of the atomic weights, proving that atomic weights are not whole numbers or multiples of halv or a quarter of the atomic weight of hydrogen."Stas demonstrated that the values of the atomic weights he had determined were neither multiples of unity, nor of one half, as Marignac believed, nor of one quarter, as Dumas maintained. This publication led Marignac to doubt the universality of the law of definite proportions. In three papers collectively entitled "Nouvelles recherches sur les lois des proportions chimiques, sur les poids atomiques et leurs rapports mutuels" (1865), Stas presented the results of an extensive series of experiments devoted to the new demonstration. By painstaking and accurate measurements he established that atomic weights were incommensurable, thereby disproving the facile conclusion that discrepancies with whole-number values were due merely to experimental errors. Prout?s hypothesis was thus discredited."(DSB).

EA; ca 23x16 cm; XII, 347 (1) Seiten mit 23 Textholzstichen und 1 Falttafel; Halbledereinband d. Zt. mit Rückentitel (Einband leicht bestoßen, oberes Kapital etwas mehr, Exlibris auf Innendeckel, Name auf Titelblatt, Seiten vereinzelt gering fleckig; sonst guter Zustand) Kein Versand nach Frankreich!

(Paris, Bachelier), 1840. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome XI , No 25. Pp. (991-) 1020. (Entire issue offered). The paper: pp. (991-) 1008. A bit of marginal soiling and some creasing to leaves. First appearance of the paper which states the correct weight of the carbon atom. This research had profound influence on the development of organic chemistry. The paper in full was published the year after (1841) in "Annales de Chimie et de Physique"."From 1840 onward he carried out an important revision of the atomic weights of thirty elements. His most valuable contribution in this field was his very precise determination of the atomic weight of carbon (jointly with his pupil Stas) in 1840. A previously accepted weight, determined by Berzelius as C = 12.20 (O = 16), was shown to be incorrect. Dumas proved that C = 12±.002 (O = 16) or C = 75 (O = 100). The analysis was made by burning diamond and artificial and natural graphite in oxygen" the carbon dioxide formed was weighed in potash solution. The results were in close agreement. The "new" weight of carbon had a great effect on the progress of organic chemistry."(DSB).

Paris, Fortin, Masson et Cie, 1841. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: "Annales de Chimie et de Physique", 3e Series - Tome 1. 512 pp. a. 3 folded engraved plates (showing experimental apparatus).Small stamp to verso of plates. (The entire volume offered). Dumas & Stas' paper: pp. 1-59. Clean and fine. First appearance in full of this paper, stating the correct weight of the carbon atom, which had profound influence on the development of organic chemistry. The first announcement (in extrait) came out in Comptes rendus, Tome Xi, 1840."From 1840 onward he carried out an important revision of the atomic weights of thirty elements. His most valuable contribution in this field was his very precise determination of the atomic weight of carbon (jointly with his pupil Stas) in 1840.2 A previously accepted weight, determined by Berzelius as C = 12.20 (O = 16), was shown to be incorrect. Dumas proved that C = 12±.002 (O = 16) or C = 75 (O = 100). The analysis was made by burning diamond and artificial and natural graphite in oxygen" the carbon dioxide formed was weighed in potash solution. The results were in close agreement. The "new" weight of carbon had a great effect on the progress of organic chemistry."(DSB).The volume contains further notable papers by Gerhardt et Cahours "Recherches chimiques sur les huiles essentitielles", pp. 60-110, by Laurent, Boussingault, Regnault, Dulong, Melloni et al.

(Paris, Fortin, Masson et Cie, 1840). 8vo. Without wrappers. Extracted from 'Annales de Chimie et de Physique', 2e Series, tome 73. Pp. 73-103 (incl. Note de Liebig pp. 100-103) and pp. 113-166. Some scattered brownspots. This paper, which was published at the same year in "Comptes Rendues" (3 Fevrier), is the most importent on the theory of structural types and the nomenclature of organic compounds, refuting the electrochemical theory of Berzelius. "The development of this idea (type organique) into what is sometimes called the "Older Type Theory", as distinguished from Gerhardt's Type heory, is contained in Dumas' importent memoir on the substitution and the theory of types, presented on 3 febriary 1840."(Partington IV, p. 365). In the second paper Stas and Dumas record the first use of 'potash-lime', the precursor of soda-lime, an invaluable reagent in organic chemistry."Jean Baptiste Dumas advances a theory that the chemical properties of an organic compound are determined by its structure and not, as seems to be the case with inorganic compounds, by its electrical properties. he illustrates the concept with the example that the basic qualitative properties of acetic acid are retained even after replacing three fourths of the hydrogen by chlorine. As a consequence, he calls for a revision of chemical nomenclature for organic compounds, basing terms on common features, not on elemental composition."(Parkinson "Breakthroughs" 1840 C).

Paris, Fortin, Masson et Cie, 1840. 8vo. In contemporary half calf with gilt lettering spine and five raised bands. The original wrappers withbound in the back. In "Annales de Chimie et de Physique", tome 73. Entire volume offered. Paper label pasted on to top of spine. Two stamps to verso of title-page. A few light occassional brownspots, otherwise a fine copy. 73-103 (incl. Note de Liebig pp. 100-103) and pp. 113-166. [Entire volume: 448 pp. + 5 folded plates. This paper, which was published at the same year in "Comptes Rendues" (3 Fevrier), is the most importent on the theory of structural types and the nomenclature of organic compounds, refuting the electrochemical theory of Berzelius. "The development of this idea (type organique) into what is sometimes called the "Older Type Theory", as distinguished from Gerhardt's Type heory, is contained in Dumas' importent memoir on the substitution and the theory of types, presented on 3 febriary 1840."(Partington IV, p. 365). In the second paper Stas and Dumas record the first use of 'potash-lime', the precursor of soda-lime, an invaluable reagent in organic chemistry. "Jean Baptiste Dumas advances a theory that the chemical properties of an organic compound are determined by its structure and not, as seems to be the case with inorganic compounds, by its electrical properties. he illustrates the concept with the example that the basic qualitative properties of acetic acid are retained even after replacing three fourths of the hydrogen by chlorine. As a consequence, he calls for a revision of chemical nomenclature for organic compounds, basing terms on common features, not on elemental composition."(Parkinson "Breakthroughs" 1840 C).

2. Bruxelles, Hayez, 1880-1882, in-4°, 103 pp, 2 planches. Published in the yearbook volume XLIII (43) of the ''Mémoires de l'Académie Royale de Belgique collection in-4°, Classe des Lettres.''. Sewn, no wrapper, removed from a binding. Publié dans le Tôme 43 des Mémoires couronnés et Mémoires des Savants Étrangers de l'Académie Royale (de Belgique). (see bibliography = Tables Générales des Mémoires, item 433).