Couper scott (35 résultats)

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

Soft cover. Etat : Fine. 1st Edition. 291qpp with 16pp b&w plates.

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PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000.

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Paperback. Etat : Brand New. 291 pages. 9.00x5.75x1.00 inches. In Stock.

Etat : New. Much public historical mythology asserts that Chief Albert Luthuli, former President of the African National Congress (ANC), launched the armed struggle upon his return to South Africa after receiving the Nobel Peace Prize. Num Pages: 256 pages, Illustrations, ports., BIC Classification: BGH; HBJH. Category: (G) General (US: Trade). Dimension: 230 x 151 x 24. Weight in Grams: 432. . 2010. Paperback. . . . . …

Etat : New. xi 291 16 of lates Illus.

Etat : New.

Paperback / softback. Etat : New. New copy - Usually dispatched within 4 working days.

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Etat : New. Much public historical mythology asserts that Chief Albert Luthuli, former President of the African National Congress (ANC), launched the armed struggle upon his return to South Africa after receiving the Nobel Peace Prize. Num Pages: 256 pages, Illustrations, ports., BIC Classification: BGH; HBJH. Category: (G) General (US: Trade). Dimension: 230 x 151 x 24. Weight in Grams: 432. . 2010. Paperback. . . . . Books ship from the US and Ireland. …

1953. (12mo, wrappers) Near fine. 45pp. Alembic Club Reprint No.21.

Etat : Good. 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.

Etat : New. Much public historical mythology asserts that Chief Albert Luthuli, former President of the African National Congress (ANC), launched the armed struggle upon his return to South Africa after receiving the Nobel Peace Prize.&Uumlber den Autor.

Taschenbuch. Etat : Neu. Albert Luthuli | Bound by Faith | Scott Couper | Taschenbuch | Einband - flex.(Paperback) | Englisch | 2010 | University of KwaZulu-Natal Press | EAN 9781869141929 | Verantwortliche Person für die EU: Mare Nostrum Group B.V., Doelen 72, 4831 GR BREDA, NIEDERLANDE, gpsr[at]mare-nostrum[dot]co[dot]uk | Anbieter: preigu. …

8°, Hardcover. Etat : Gut. 40 S. Band 183. Hardcover. Bei dem Buch handelt es sich um ein ehemaliges Bibliotheksexemplar mit Signatur und Stempel. M15000. Sprache: Deutsch Gewicht in Gramm: 190.

Hardcover. Etat : Gut. 40 y08568 Ehemaliges Bibliotheksexemplar mit Signatur und Stempel in gutem Zustand. Sprache: Deutsch Gewicht in Gramm: 550.

Kl.-Oktav (190 x 120 mm), Org.-Pappband, mit einem Porträt-Frontispiz, 40 S., umseitig farbiger Schnitt, sehr leichte Gebrauchspuren, aber insgesamt gut erhalten. [Ostwald's Klassiker der exakten Wissenschaften; 183]. - - [604 | SOD | ] 100 g.

Hardcover. Etat : Near Fine. No Jacket. COUPER, [Archibald Scott]. RECHERCHES SUR L'ACIDE SALICYLIQUE and SUR UNE NOUVELLE THÉORIEssues , 1858 pp. 1157-1160 and pp. 1107-1110. The pages of the 14 June issue show some ageing and maybe mild foxing Discovery of key principles underlying organic chemistry]. Paris: Mallett-Bachelier, 1858. A Very Good++ hardback in custom blue green buckram binding with gilt lettering spine, with foxing. 4to. Hardcover. Very Good+ His other experimental paper, on salicylic acid, was published in 1858. Early in 1858 Couper asked Wurtz to have presented before the French Academy of Sciences a paper entitled "On a New Chemical Theory." Wurtz, not a member of the Academy, procrastinated before finding someone to present it. In the intervening period Kekule's paper, dated 19 May 1858, appeared in Liebig's Annalen. Couper's paper - on essentially the same topic - was presented to the French Academy by J. B. A. Dumas in June and was published soon thereafter. Kekule attacked the paper almost immediately, claiming priority and greater significance for his own work. Couper, at the same time as F. A. Kekule and independently of him, introduced principles that underlie the modern structural theory of organic chemistry [e. g. linking of tetravalent carbon into chains forming large molecules and deducing the bonding order of atoms in molecules from chemical evidence] . He also introduced into organic chemistry lines to represent valence bonds in chemical formulas. All his papers were published in barely over a year, after which ill health terminated his scientific career. (DSB Vol. 3, p. 448).…

Soft cover. Etat : Very Good. COUPER, A. S.(Archibald Scott). "A New Theory (that) Revolutionized Organic Chemistry"--Michael Sutton, "A Forgotten Triumph" in ChemistryWorld online.  [++] "Sur une nouvelle Théorie cimique. (Note présentée par M.Dumas) (On a New Chemical Theory")." AND "Reserches sur l'acide salicylique" BOTH Paris, Mallet-Bachelier, 1858. In: Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences, volume 46, No 23 and No 24, pp1079-1122 and 1121-1173 in two full issues with Couper's papers on pp. 1107-1110 and the bigger paper on 1157-1160. Extracted without wrappers from a larger volume nice, tidy, crisp copy. The New Theory of Chemistry paper is a foundation work introducing key concepts in developing orgchem, also introducing the dotted line and lines to represent the new concept of bonds--it was "a new theory that revolutionized organic chemistry"--Michael Sutton, "A Forgotten Triumph" in ChemistryWorld online. [++] "After moving to Paris in August 1856, Couper (1831 -1892) engaged in independent research in the laboratory of Charles Adolphe Wurtz. His first publication on the bromination of benzene appeared in August 1857. His other experimental paper, on salicylic acid, was published in 1858. Early in 1858 Couper asked Wurtz to have presented before the French Academy of Sciences a paper entitled "On a New Chemical Theory" [the paper offered here]. Wurtz, not a member of the Academy, procrastinated before finding someone to present it. In the intervening period Kekulé s paper, dated 19 May 1858, appeared in Liebig's Annalen. Couper's paper on essentially the same topic was presented to the French Academy by J. B. A. Dumas in June and was published soon thereafter. Kekulé attacked the paper almost immediately, claiming priority and greater significance for his own work. He also questioned Couper's researches on salicylic acid and, since Couper never answered, his name was long forgotten. Couper complained to Wurtz about the delay in presenting his paper and was asked to leave the laboratory. He returned to Scotland in the fall of 1858 and accepted a position as second laboratory assistant to Lyon Playfair, professor of chemistry at Edinburgh University. Soon after beginning his duties he suffered a mental breakdown, underwent treatment, apparently recovered, and went on a fishing expedition, during which, reportedly due to extended exposure to the sun, his illness returned. He never fully recovered and lived in retirement for the remaining thirty-four years of his life."--"Couper, Archibald Scott." Complete Dictionary of Scientific Biography online, vol. 3, Charles Scribner's Sons, 2008, pp. 448-450 (paper version). [++] A longer version (20pp) of this paper would appear shortly after this publication (still in 1858) in the Annales de Chimie et de Physique. [++] "In 1858 August Kekulé (1829 1896) and Archibald Scott Couper (1831 1892), two young men from different backgrounds, independently recognized that carbon atoms can link directly to one another to form carbon chains. This finding explained the very multiplicity of carbon compounds that had been puzzling chemists. The discovery by these two scientists depended on Kekulé s theory, proposed in 1857, that carbon is tetravalent, valence being defined at the time as the combining capacity of atoms of the various elements. Couper, in his paper [offered here] and in another paper on salicylic acid that appeared earlier in 1858 [also offered here] indicated valence bonds as straight lines linking the symbols for the elements, which is still the practice in most modern structural diagrams." --Science History Institute online [++] (In 1858) Couper publishes symbolic formulae for chemical compounds, illustrating the linking of constituent atoms by dotted lines connecting the respective atomic symbols. Although the dotted lines are later replaced by solid lines, the general scheme gains gradual acceptance."--Claire Parkinson, Breakthroughs, p. 350.…

Couverture rigide. Etat : Très bon. Edition originale. Demi basane de l'époque. Un volume in-8 (207x130 mm), 512 pages et 2 planches dépliantes (pages 469-489 pour l'article de Couper). Important article dans lequel Couper détaille sa "Nouvelle théorie chimique". Elle avait été présentée peu avant dans un note condensée de 4 pages, le 14 juin 1858 à l'Académie des sciences, puis Couper détailla sa "Nouvelle théorie chimique" en août 1858 dans notre article. Il y énonce les deux principes suivants : 1. La valence de l'atome de carbone 2. L'atome de carbone peut entrer en combinaison avec lui-même en conduisant aux différentes combinaisons organiques. Il utilise aussi pour la première fois des pointillés ou des traits entre les atomes dans ses formules ce qui préfigure l'apparence actuelle de celles-ci. C'est au début de l'année 1858 que Couper demande à Wurtz, dans le laboratoire duquel il travaille alors, de présenter devant l'Académie des sciences une note intitulée 'Sur une nouvelle théorie chimique'. Wurtz, n'étant pas membre de l'Académie, tarda à trouver quelqu'un pour le présenter. Entre-temps, l'article de Kekulé, portant essentiellement sur le même sujet, daté du 19 mai 1858, parut dans les Annalen de Liebig. Finalement ce fût J.B. Dumas qui lut la note de Couper à l'Académie des Sciences le 14 juin. Provenance : Ecole d'artillerie de Toulouse (étiquette au dos et quelques cachets, mais pas sur l'article de Couper). References : DSB [III p. 448 : "Couper, at the same time as F. A. Kekulé and independently of him, introduced principles that underlie the modern structural theory of organic chemistry. He also introduced into organic chemistry lines to represent valence bonds in chemical formulas."], Nephtali CALLAERTS & Jérémy DEHON [La liaison chimique au gré des courants épistémologiques in. Chimie nouvelle. 131. p. 30 : "La palme du premier scientifique ayant proposé une structure moléculaire, c'est à dire une représentation graphique des interactions entre atomes composant une substance chimique, revient à Couper avec sa publication 'Sur une nouvelle théorie chimique', en 1858."]. ___________________________________________________________________________________ ______________________________ENGLISH_DESCRIPTION : 8vo (207x130 mm), 512 pages and 2 plates (pp. 469-489 for the paper of Couper). An important paper in which Couper details his "New Chemical Theory." It had been presented shortly before in a condensed, four-page note to the Academy of Sciences on June 14, 1858, and then Couper elaborated on his "New Chemical Theory" in August 1858 in our paper. In it, he sets forth the following two principles: 1. The valence of the carbon atom 2. The carbon atom can combine with itself, leading to various organic compounds. He also uses, for the first time, dotted lines or dashes between atoms in his formulas, foreshadowing their current appearance. At the beginning of 1858, Couper asked Wurtz, in whose laboratory he was then working, to present a note entitled "On a New Chemical Theory" to the Academy of Sciences. Wurtz, not being a member of the Academy, was slow to find someone to present it. Meanwhile, Kekulé's article, essentially on the same subject, dated May 19, 1858, appeared in Liebig's Annalen. Finally, it was J.B. Dumas who read Couper's note to the Academy of Sciences on June 14. Provenance : Ecole d'artillerie de Toulouse (étiquette au dos et quelques cachets, mais pas sur l'article de Couper). References : DSB [III p. 448 : "Couper, at the same time as F. A. Kekulé and independently of him, introduced principles that underlie the modern structural theory of organic chemistry. He also introduced into organic chemistry lines to represent valence bonds in chemical formulas."], Nephtali CALLAERTS & Jérémy DEHON [La liaison chimique au gré des courants épistémologiques in. Chimie nouvelle. 131. p. 30 : "La palme du premier scientifique ayant proposé une structure moléculaire, c'est à dire une représentation graphique des interactions entre atomes composant une substa.…

Hardcover. Etat : Very Good. In: Comptes Rendus, January-June, 1858 pp. 1157-1160 and pp. 1107-1110. [ Discovery of key principles underlying organic chemistry]. Paris: Mallett-Bachelier, 1858. A Very Good++ hardback entire issue of Comptes Rendus in blue green buckram binding with gilt lettering spine, with foxing. 4to. Hardcover. Very Good++.His other experimental paper, on salicylic acid, was published in 1858. Early in 1858 Couper asked Wurtz to have presented before the French Academy of Sciences a paper entitled "On a New Chemical Theory." Wurtz, not a member of the Academy, procrastinated before finding someone to present it. In the intervening period Kekule's paper, dated 19 May 1858, appeared in Liebig's Annalen. Couper's paper - on essentially the same topic - was presented to the French Academy by J. B. A. Dumas in June and was published soon thereafter. Kekule attacked the paper almost immediately, claiming priority and greater significance for his own work. Couper, at the same time as F. A. Kekule and independently of him, introduced principles that underlie the modern structural theory of organic chemistry [e. g. linking of tetravalent carbon into chains forming large molecules and deducing the bonding order of atoms in molecules from chemical evidence] . He also introduced into organic chemistry lines to represent valence bonds in chemical formulas. All his papers were published in barely over a year, after which ill health terminated his scientific career. (DSB Vol. 3, p. 448). . //// DW ////Ask for pictures. //// DW ////Ask for pictures.…

Soft cover. Etat : Very Good. Paris Mallett-Bachelier 1858 A Very Good++ hardback entire issue of Comptes Rendus in blue green buckram binding with gilt lettering spine, with foxing. 4to. Very Good++ His other experimental paper, on salicylic acid, was published in 1858. Early in 1858 Couper asked Wurtz to have presented before the French Academy of Sciences a paper entitled "On a New Chemical Theory." Wurtz, not a member of the Academy, procrastinated before finding someone to present it. In the intervening period Kekule's paper, dated 19 May 1858, appeared in Liebig's Annalen. Couper's paper - on essentially the same topic - was presented to the French Academy by J. B. A. Dumas in June and was published soon thereafter. Kekule attacked the paper almost immediately, claiming priority and greater significance for his own work. Couper, at the same time as F. A. Kekule and independently of him, introduced principles that underlie the modern structural theory of organic chemistry [e. g. linking of tetravalent carbon into chains forming large molecules and deducing the bonding order of atoms in molecules from chemical evidence] . He also introduced into organic chemistry lines to represent valence bonds in chemical formulas. All his papers were published in barely over a year, after which ill health terminated his scientific career. (DSB Vol. 3, p. 448).…

(Paris, Mallet-Bachelier), 1858. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 46, No 24. Pp. (1121-) 1173 (entire issue offered). Couper's paper: pp. 1157-1160. A faint dampstain to right margins. First appearance of this milestone announcement in organic chemistry - a longer memoir was published in "Annales de Chimie et de Physique" later in the same year, 1858 - in which, independently of Kekulé, Couper introduces the CONCEPT OF BONDS (represented as a dash or a dotted line) in chemistry and also observes the very importent fact, that carbon atoms forms the backbone of organic compounds."It was not till 1858 that a satisfactory theory of molecular constitution was advanced, simultaneously and endependently, by thwo young chemists, Friedrich August Kekulé and Archibald Scott Couper. The theory of molecular constitution put foreward.by Couper and Kekulé rested on two main postulates, the quadriivalency of carbon.and the capacity of the carbon atom for mutual linking or combining together to form a carbon "chain". By this hypothesis of the mutual linking together of carbon atoms - which waslater confirmed by experiment - it was possible to explain the formation of organic compounds containing a large number of carbon atoms. On the foundation of their postulates two postulates, moreover, (they) showed how the molecular constitution or mutual linking together of the atoms of a compound could be represented diagrammatically and the relstions between different compounds made readily intelligible. In his classic paper "On a New Chemical Theory" (the paper offered here in its first appearance) advanced beyond Kekulé by representing the constitutions of the compounds by means of GRAPHIC FORMULA in which, as at the present day, the valencies pf the atoms are represented by lines.his formulae are similar to those at present in use."(Findlay pp. 34 ff)"The theory of Kekulé and Couper gave the chemists the maeans of solving the problems of chemical constitution" and by means of the graphic or constitutional formulae it became possible to represent the molecular constitution of known compounds and to foresee the possible existence of isomeric compounds."(Findlay).Parkinson "Breakthroughs" 1858 C.…