‎Decouverte‎

‎Croatia European Conference on Principles and Practice of Knowledge Discovery in Databases 7th : 2003 : Cavtat Nada Lavrac Dra‎

‎Knowledge Discovery in Databases: PKDD 2003: 7th European Conference on Principles and Practice of Knowledge Discovery in Databases Cavtat-Dubrovnik . / Lecture Notes in Artificial Intelligence‎

‎Springer. Used - Good. Former Library book. Shows some signs of wear and may have some markings on the inside. Springer unknown‎

书商的参考编号 : GRP78753268 ???????? : 3540200851 9783540200857

‎CURIE IRENE et MF. JOLIOT. ANNOUNCING THE DISCOVERY OF ARTIFICIAL RADIOACTIVITY NOBEL PRIZE PAPER OF 1935. M. F.‎

‎Un nouveau type de radioactivit�. S�ance du 15 Janvier 1934.‎

‎Paris Gauthier-Villars 1934. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des S�ances de L'Academie des Sciences" Tome 198 No 3. Titlepage to vol. 198. Pp. 213- 292. Entire issue offered. The joint paper: pp. 254-256 a. 1 photographic illustration in the text. Titlepage with a stamp on verso 2 small tears and a tiny bit of upper right corner gone. Titlepage a bit browned. � First appearance of this seminal paper in which artificial radioactivity was announced for the first time. Curie and Joliot were awarded the Nobel Prize in Chemistry 1935 "in recognition of their synthesis of new radioactive elements".<br><br>"Until this date 1934 atomic nuclei emitting radiation were found in nature: it was called the natural radioactivity. It had been known since Rutherford that this natural radioactivity changed a nucleus into an other one: for instance radium becomes finally lead after many radioactive decays. We could say that lead does not become gold but gold becomes lead! But. this change of matter was not under control. It was not possible to construct the desired chemical element as the alchemist dreamed. But Irene and Frederic Joliot-Curie made the dream become almost reality."<br><br>"Another very important development in the early 1934 by the Joliot-Curies in connection with irradiation of aluminum by alpha particles. The two French scientists detected the production of the recently discovered positrons. . However they soon realized that the positron activity continued after the alpha source was removed and that they had in fact discovered positive beta radioactivity. The importance of the discovery of artificial radioactivity was immediately recognized and resulted in a Nobel Prize in chemistry to the Joliot-Curies in 1935. The new phenomenon immediately became widely employed in nuclear physics chemistry biology and medicine." Kragh Quantum Generations p. 187<br><br>"These elegant experiments which provided the first chemical proof of induced transmutations and showed the possibility of artificially creating radioisotopes of known stable elements were repeated and extended in the major nuclear physics laboratories of various countries " DSB.<br><br>Born on 12 September 1897 in Paris Ir�ne Curie was the daughter of Pierre and Marie Curie. "During World War I she worked as a nurse helping her mother operate radiography equipment and then studied physics and mathematics at the Sorbonne gaining a doctorate for studying the range of alpha particles. She then went to work for her mother at the Radium Institute. There she met Fr�d�ric Joliot whom she married in 1926. Fr�d�ric Joliot was born on 19 March 1900 in Paris - He joined the Radium Institute in 1925 and obtained his PhD in 1930. Together the Joliot-Curies worked on radioactivity and the transmutation of the elements. Twice they just missed major discoveries: in 1932 when Chadwick beat them to the neutron and in 1933 when Anderson discovered the positron. However in 1934 whilst bombarding light elements with alpha particles the Joliot-Curies noticed that although proton production stopped when the alpha particle bombardment stopped another form of radiation continued. The alpha particles had produced an isotope of phosphorus not found in nature. This isotope was radioactive and was decaying through beta-decay" DSB. unknown‎

书商的参考编号 : 47071

‎CURIE MARIE SKLODOWSKA. THE DISCOVERY OF THE RADIOACTIVITY OF THORIUM COINING THE TERM 'RADIOACTIVITY'‎

‎Rayons �mis par les compos�s de l'uranium et de thorium. Present�e par M. Lippmann. S�ance du Mardi 12 Avril 1898.‎

‎Paris Gauthier-Villars 1898. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des S�ances de L'Academie des Sciences" Tome 126 No 15. Entire issue offered. With htitle and titlepage to vol. 126. Pp. 1059-1110. Curie's paper: pp. 1101-1103. � First printing of this milestone paper being the first "Note" from Marie Curie about "radioactivity". This same "Note" contains a the fundamental observation: "Two uranium ores. are much more active than uranium itself. This fact. leads one to believe that these ores may contain an element much more active than uranium." This paper gives the first proof of the fact that radiation is an atomic property.<br><br>"Henri Becquerel discovered 1896 that uranium salts shielded from light for several months spontaneously emit rays related in their effects to Roentgen rays. Mme. Curie became enthusiastic about this subject filled with the unknown and as she later acknowledged involving no bibliographic research.<br>The first step in the research was to determine whether there existed other elements capable like uranium of emitting radiation. Abandoning the idea of hyperfluorescence couldn�t one calculate by electrical measurement the effects on the conductivity of air that were revealed by the gold-leaf electroscope Pierre Curie and his brother Jacques had constructed an extremely sensitive apparatus to measure weak currents; Mme. Curie employed it in testing both pure substances and various ores. In her first "Note" in the Comptes rendus"de l Acad�mie des sciences 12 April 1898 she described the method that she followed throughout her life the method that enabled her to make comparisons through time and crosschecks with other techniques:<br><br>"I employed. a plate condenser one of the plates being covered with a uniform layer of uranium or of another finely pulverized substance diameter of the plates eight centimeters; distance between them three centimeters. A potential difference of 100 volts was established between the plates. The current that traversed the condenser was measured in absolute value by means of an electrometer and a piezoelectric quartz. In general she preferred the zero method in which the operator compensates for the current created by the active material by manipulating the quartz. All of her students followed this procedure."DSB.<br><br>The first results came in 1898: the measurements varied between 83 � 10-12 amperes for pitch blende to less than 0.3 � 10-12 for almost inactive salts passing through 53 � 10-12 for thorium oxide and for chalcolite double phosphate of uranium and copper. Thorium would thus be "radioactive" the term is Mme. Curie�s; its radioactive properties were discovered at the same time independently by Schmidt in Germany. unknown‎

书商的参考编号 : 46852

‎Daladier Jean - Daridan Jean ( Pour les annotations )‎

‎Edouard Daladier Journal de Captivité 1940-1945‎

‎Calmann-Lévy, 1991 - In-8°, broché, couverture ill ( portrait ) 391 pages, index sélectif, repères biographiques, bel ouvrage.‎

‎Très Bon Etat Franco de port pour la France par MONDIAL RELAY dés 20 euros pour les ouvrages modernes . Paiement immédiat par Paypal . Chèques et virement acceptés. Votre Libraire vous accompagne dans toutes les étapes de vos achats. Achat et déplacement France Suisse.‎

书商的参考编号 : 14169

‎Dalgado SebastiaIAo Rodolpho. Portugal. Quarto centenario do descobrimento da India . Sociedade de geographia de Lisboa.‎

‎Dialecto indo-portugueI‚s de CeylaIƒo 1900 Leather Bound‎

‎2019. Leather Bound. New. Leather Binding on Spine and Corners with Golden Leaf Printing on round Spine. Reprinted in 2019 with the help of original edition published long back 1900. This book is printed in black & white sewing binding for longer life Printed on high quality Paper re-sized as per Current standards professionally processed without changing its contents. As these are old books we processed each page manually and make them readable but in some cases some pages which are blur or missing or black spots. If it is multi volume set then it is only single volume if you wish to order a specific or all the volumes you may contact us. We expect that you will understand our compulsion in these books. We found this book important for the readers who want to know more about our old treasure so we brought it back to the shelves. Hope you will like it and give your comments and suggestions. Lang: - ita Pages 304. EXTRA 10 DAYS APART FROM THE NORMAL SHIPPING PERIOD WILL BE REQUIRED FOR LEATHER BOUND BOOKS. FOLIO EDITION IS ALSO AVAILABLE. hardcover‎

书商的参考编号 : LB1111006391483

‎Dalgado SebastiaIo Rodolpho. Portugal. Quarto centenario do descobrimento da India . Sociedade de geographia de Lisboa.‎

‎Dialecto indo-portugueI‚s de CeylaIƒo 1900‎

‎2020. Paperback. New. Lang: - ita Pages 304. Reprinted in 2020 with the help of original edition published long back 1900. This book is Printed in black & white sewing binding for longer life with Matt laminated multi-Colour Soft Cover HARDCOVER EDITION IS ALSO AVAILABLE Printed on high quality Paper re-sized as per Current standards professionally processed without changing its contents. As these are old books we processed each page manually and make them readable but in some cases some pages which are blur or missing or black spots. If it is multi volume set then it is only single volume if you wish to order a specific or all the volumes you may contact us. We expect that you will understand our compulsion in these books. We found this book important for the readers who want to know more about our old treasure so we brought it back to the shelves. Any type of Customisation is possible with extra charges. Hope you will like it and give your comments and suggestions. paperback‎

书商的参考编号 : PB1111006391483

‎Dalgado SebastiaIAo Rodolpho. Portugal. Quarto centenario do descobrimento da India . Sociedade de geographia de Lisboa.‎

‎Dialecto indo-portugueI‚s de CeylaIƒo 1900 Hardcover‎

‎2020. Hardcover. New. Lang: - ita Pages 304. Reprinted in 2020 with the help of original edition published long back 1900. This book is Printed in black & white Hardcover sewing binding for longer life with Matt laminated multi-Colour Dust Cover Printed on high quality Paper re-sized as per Current standards professionally processed without changing its contents. As these are old books we processed each page manually and make them readable but in some cases some pages which are blur or missing or black spots. If it is multi volume set then it is only single volume if you wish to order a specific or all the volumes you may contact us. We expect that you will understand our compulsion in these books. We found this book important for the readers who want to know more about our old treasure so we brought it back to the shelves. Any type of Customisation is possible with extra charges. Hope you will like it and give your comments and suggestions. hardcover‎

书商的参考编号 : 1111006391483

‎DANBY G. & J M. GAILLARD & K. GOULIANOS & L. M. LEDERMAN & N. MISTRY & M. SCHWARTZ & J. STEINBERGER. THE DISCOVERY OF THE MUO‎

‎Obervation of High-Energy Neutrino Reactions and the Existence of Two Kinds of Neutrino.‎

‎New York American physical Society 1962. Lex8vo. Volume 9 No. 1 July 1 1962 of "Physical Review Letters" In the original printed blue wrappers. A very nice and clean copy externally as well as internally near mint. Pp. 36-44. Entire issue: 2 46 pp. � First edition of this seminal paper in which the discovery of the muon neutrino was first announced. The muon neutrino is the second of the three neutrinos and it forms the second generation of leptons. Jack Steinberger Leon Lederman and Melvin Schwartz were awarded the Nobel Prize in Physics in the year 1988 "for the neutrino beam method and the demonstration of the doublet structure of the leptons through the discovery of the muon neutrino". <br><br>In 1934 Enrico Fermi had solved the major problem of beta decay: How do electrons come out of the nucleus if there are non to begin with Pauli had named his proposed light particle a neutron. James Chadwick had named his much more massive nuclear particle a neutron as well which left the two particles with the same name. Fermi therefore to solve the confusion coined the term neutrino Italian diminutive of neutron. Speculations in the early 1940ies were centered on whether it would be possible to find even smaller parts of an atom. "The experiment used a beam of the AGS's energetic protons to produce a shower of pi mesons which traveled 70 feet toward a 5000-ton steel wall made of old battleship plates. On the way they decayed into muons and neutrinos but only the latter particles could pass through the wall into a neon-filled detector called a spark chamber. There the impact of neutrinos on aluminum plates produced muon spark trails that could be detected and photographed -- proving the existence of muon-neutrinos. The experiment's use of the first-ever neutrino beam paved the way for scientists to use these particles in research at the AGS and around the world."Nobel Prize Brookhaven National Laboratory <br><br>"Following the discovery of a second neutrino associated with the muon - the Muon neutrino - at Brookhaven in 1962 by L. Lederman M. Schwartz J. Steinberger and collaborators a new neutrino program was started in CERN in 1963. Using a spark chamber set-up and a heavy liquid bubble chamber exposed to the new high quality neutrino beam the discovery was confirmed with high statistics". Krige John. History of CERN 1996 p. 433. unknown‎

书商的参考编号 : 43437

‎Dary, Georges‎

‎Tout par l'électricité. 2è édition‎

‎Mame In-8 Couverture rigide Tours 1883‎

‎Bon 479 pages. Ex libris de remise de prix d'excellence en page de garde, tache sur la page de titre. Nombreuses planches noir et blanc. L'auteur démontre les diverses applications de l'électricité : lampes, passages à niveau, etc.‎

书商的参考编号 : 4008

‎DARWIN Charles‎

‎Voyage d’un naturaliste autour du monde‎

‎Voyage d’un naturaliste autour du monde fait à bord du navire le Beagle de 1851 à 1856. Traduit de l’anglais par E.D BARBIER.. Deuxième édition. In 8 cartonné, reliure muette 150x2140mm, Faux titre, titre préface de l’auteur, du traducteur- seconde préface X+VIII, 552 pages, non rogné, catalogue de 18 pages, des livres du fonds de G.REINWALD décembre 1886. Couverture papier bleu. Paris C REINWALD libraire éditeur 1883. (Marge inférieure plus courte à la page de faux-titre- ainsi qu’à la page I de la préface- petite déchirure, réparée en marge extérieure, page de titre) quelques figures dans le texte, bon état d’ensemble.‎

书商的参考编号 : 13907

‎DART R. A. DISCOVERY OF AUSTRALOPITHECUS AFRICANUS‎

‎Australopithecus Africanus: The Man-ape of South Africa.‎

‎London Macmillan & Co. 1925. Royal8vo. Bound in contemporary half calf with two black leather title label to spine with gilt lettering. Five raised bands. In "Nature" Vol. 115 January - June 1925. Library stamp of Christ Church College Oxford on first page of index with their bookplate on front free endpaper and that of Dr Lee's Laboratory Christ Church on front paste-down. Minor wear to extremities otherwise a very fine and clean copy. Pp. 195-9. � First announcement of the revolutionary discovery of Australopithecus africanus.<br><br>Australopithecus africanus was an early hominid who lived between 3.03 and 2.04 million years ago in the later Pliocene and early Pleistocene. In common with the older Australopithecus afarensis Australopithecus africanus was of slender build and was thought to have been a direct ancestor of modern humans. Fossil remains indicate that Au. africanus was significantly more like modern humans than Au. afarensis with a more human-like cranium permitting a larger brain and more humanoid facial features. Au. africanus has been found at only four sites in southern Africa.<br><br>A quarryman blasting in a fossiliferous lime deposit near Taungs in West Transvaal South Africa. came across a small skull which looked very human to him. The skull was sent to Dr. Raymond Dart an anatomist from the University of Witwatersrand in Johannesburg. Dart studied the skull and reached the conclusion that it was that of an infant being intermediate between a higher ape and man and early in 1925 published a paper describing this fossil which he names Australopithecus africanus. hardcover‎

书商的参考编号 : 47057

‎DAVY, HUMPHRY - THE DISCOVERY OF POTASSIUM AND SODIUM.‎

‎The Bakerian Lecture, on some new Phenomena of chemical Changes produced by Electricity,particularly the Decomposition of the fixed Alkalies, and the Exhibition of the new substances which constitute their bases" and on the general Nature of alkaline ...‎

‎(London, W. Bulmer and Co., 1808). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1808 - Part I. Pp. 1-44.‎

‎First printing of this importent historical paper in chemistry, in which Davy shows that electricity is capable of decomposing some alkalies, isolating two new substances and discovering potassium and sodium. Neville in his Historical Chemical Library vol. I, p.340, writes about this paper ""ONE OF THE GREAT CLASSIC RESEARCHES IN CHEMISTRY, in which Davy announced in this, his second Bakterian lecture, the isloation of metallic potassium and sodium by the electrolytic decomposition of their fused oxides.""""He (Davy) began his own electrical experiments...The results were spectacular. On October 6, 1807, the current passing through molten potash liberated a metal, which Davy called potassium. The little globules of shining metal tore the water molecule apart as it eagerly recombined with oxygen and the liberated hydrogen burst into lavender flame. Davy danced about in a delirium of joy. A week later he isolated sodium from soda.""(Asimow). The paper offered here describes these discoveries.""Humphry Davy was one of the most brilliant chemists of the early nineteenth century. His early study of nitrous oxide brought him his first reputation, but his later and most importent investigations were devoted to electrochemistry. Following Galvani's experiments and the discovery of the voltaic pile, interest in galvanic electricity had become widespread. The first electrolysis by means of the pile was carried out in 1800 by Nicholson and Carisle, who obtained oxygen and hydrogen from water. Davy began to examine the chemical effects of electricity in 1800, and his numerous discoveries were presented in his Bakerian lecture to the Royal Society on November 20, 1806.(A Source Book in Chemistry p. 243). - Wheeler Gift: 2514.‎

书商的参考编号 : 42218

‎Dave Branon; Discovery House Publishers Staff‎

‎Better Than Life : Today's Stories of Faith at Any Cost‎

‎Discovery House Publishers 2007. Paperback. Very Good. Disclaimer:A copy that has been read but remains in excellent condition. Pages are intact and are not marred by notes or highlighting but may contain a neat previous owner name. The spine remains undamaged. At ThriftBooks our motto is: Read More Spend Less.Dust jacket quality is not guaranteed. Discovery House Publishers paperback‎

书商的参考编号 : G1572932651I4N00 ???????? : 1572932651 9781572932654

‎Dave Branon; Discovery House Staff‎

‎Our Daily Times with God‎

‎Discovery House Publishers 1988. Hardcover. Acceptable. Disclaimer:A readable copy. All pages are intact and the cover is intact. Pages can include considerable notes-in pen or highlighter-but the notes cannot obscure the text. At ThriftBooks our motto is: Read More Spend Less.Dust jacket quality is not guaranteed. Discovery House Publishers hardcover‎

书商的参考编号 : G0929239016I5N00 ???????? : 0929239016 9780929239019

‎Dave Branon; Discovery House Staff‎

‎Our Daily Bread : A Selection of Readings from the Popular Devotional‎

‎Discovery House Publishers 1997. Paperback. Good. Disclaimer:A copy that has been read but remains in clean condition. All pages are intact and the cover is intact. The spine may show signs of wear. Pages can include limited notes and highlighting and the copy can include previous owner inscriptions. At ThriftBooks our motto is: Read More Spend Less.Dust jacket quality is not guaranteed. Discovery House Publishers paperback‎

书商的参考编号 : G1572930195I3N00 ???????? : 1572930195 9781572930193

‎Dave Branon; Discovery House Publishers Staff‎

‎When You Don't Know What to Say: Words of Caring for All Occasions 2nd Edition‎

‎Discovery House Publishers 2010. Paperback. Good. Disclaimer:A copy that has been read but remains in clean condition. All pages are intact and the cover is intact. The spine may show signs of wear. Pages can include limited notes and highlighting and the copy can include previous owner inscriptions. At ThriftBooks our motto is: Read More Spend Less.Dust jacket quality is not guaranteed. Discovery House Publishers paperback‎

书商的参考编号 : G1572933798I3N00 ???????? : 1572933798 9781572933798

‎Davies John Sir Davies John Sir. Historical relations or A discovery of the true causes why Ireland was never entirely sub‎

‎A poem on the immortality of the soul 1733 Hardcover‎

‎2020. Hardcover. New. Lang: - eng Pages 274. Reprinted in 2020 with the help of original edition published long back 1733. This book is Printed in black & white Hardcover sewing binding for longer life with Matt laminated multi-Colour Dust Cover Printed on high quality Paper re-sized as per Current standards professionally processed without changing its contents. As these are old books we processed each page manually and make them readable but in some cases some pages which are blur or missing or black spots. If it is multi volume set then it is only single volume if you wish to order a specific or all the volumes you may contact us. We expect that you will understand our compulsion in these books. We found this book important for the readers who want to know more about our old treasure so we brought it back to the shelves. Any type of Customisation is possible with extra charges. Hope you will like it and give your comments and suggestions. hardcover‎

书商的参考编号 : 1111005322699

‎DAVY HUMPHRY. THE DISCOVERY OF THE ANAESTETHIC EFFECTS OF "LAUGHING GAS"‎

‎Athembarkeit des sauerstoffhaltigen Stickgas; aus einem Briefe H.Davy's an Will. Nicholson. Nachricht von einigen merkw�rdigen Versuchen Davy's. Aus einem Briefe Humphry Davy's an Will. Nicholson.‎

‎Halle Rengerschen Buchhandlung 1799 1800. Without wrappers extracted from "Annalen der Physik. Herausgegeben von Ludwig Wilhelm Gilbert" Bd. 2. p. 483 one page. and Bd. 6 pp. 105-115. Some scattered brownspots. � First German translation of Davy's announcement the announcement on 1 page of his discovery of the unusual anaesthetic effects of nitrous oxide which on being inhaled gave rise to a giddy intoxicated feeling. On announcing his discovery he says that he will publish a paper discribing the experiments with the gas later. This is the paper offered here also in the first German version. Both the announcement and the paper were issued in the "Annalen" the same year as they appeared in Nicholson's Journal.<br>The gas was first synthesized by English natural philosopher and chemist Joseph Priestley in 1772 who called it phlogisticated nitrous air.<br><br>"Following Priestley's discovery Humphry Davy of the Pneumatic Institute in Bristol England experimented with the physiological properties of the gas such as its effects upon respiration. He even administered the gas to visitors to the institute and after watching the amusing effects on people who inhaled it coined the term 'laughing gas'! Davy even noted the anaesthetic effects of the gas: "As nitrous oxide in its extensive operation appears capable of destroying physical pain it may probably be used with advantage during surgical operations in which no great effusion of blood takes place".Wikipedia.<br><br>"Davy discovered the anaesthetic properties of nitrous oxide and suggested its use during surgiical operations a suggestion which was not turned to useful account until 1844."Garrison & Morton 5646 not mentioning the announcing of its discovery in 1799. unknown‎

书商的参考编号 : 44095

‎DAVY HUMPHRY THE DISCOVERY OF POTASSIUM AND SODIUM FRENCH VERSION.‎

‎Recherches �lectrochimiques sur la d�composition des terres avec des observations sur les m�taux obtenus des terres alcalines et sur un amalgame produit avec l'ammoniaque. Tireeis des Transactions philosophiques et traduites par M. C.A. Prieur. Suite des Recherches �lectrochimiques.‎

‎Paris Mad. Ve Barnard 1809. Contemp. hcalf. Spine gilt. Wear to top of spine. A few scratches to binding. Small stamps on verso of titlepage.In: "Annales de Chimie ou Recueil de M�moires concernant la Chemie" Tome 70. 336 pp. Entire volume offered. Davy's paper: pp. 189-254. � First edition in French the first English 1808 of this importent historical paper in chemistry in which Davy shows that electricity is capable of decomposing some alkalies isolating two new substances and discovering potassium and sodium. <br>Neville in his Historical Chemical Library vol. I p.340 writes about this paper "ONE OF THE GREAT CLASSIC RESEARCHES IN CHEMISTRY in which Davy announced in this his second Bakterian lecture the isloation of metallic potassium and sodium by the electrolytic decomposition of their fused oxides."<br><br>"He Davy began his own electrical experiments.The results were spectacular. On October 6 1807 the current passing through molten potash liberated a metal which Davy called potassium. The little globules of shining metal tore the water molecule apart as it eagerly recombined with oxygen and the liberated hydrogen burst into lavender flame. Davy danced about in a delirium of joy. A week later he isolated sodium from soda."Asimow. The paper offered here describes these discoveries.<br><br>"Humphry Davy was one of the most brilliant chemists of the early nineteenth century. His early study of nitrous oxide brought him his first reputation but his later and most importent investigations were devoted to electrochemistry. Following Galvani's experiments and the discovery of the voltaic pile interest in galvanic electricity had become widespread. The first electrolysis by means of the pile was carried out in 1800 by Nicholson and Carisle who obtained oxygen and hydrogen from water. Davy began to examine the chemical effects of electricity in 1800 and his numerous discoveries were presented in his Bakerian lecture to the Royal Society on November 20 1806. A Source Book in Chemistry p. 243. unknown‎

书商的参考编号 : 50198

‎DAVY HUMPHRY THE DISCOVERY OF HYDROGEN TELLURIDE.‎

‎The Bakerian Lecture for 1809. On some new Electrochemical Researches on various Objects particularly the metallic Bodies from the Alkalies and Earth and on some Combinations of Hydrogene. Read November 16 1809.‎

‎London W. Bulmer and Co. 1810. 4to. No wrappers as extracted from "Philosophical Transactions" 1810 - Part I. Pp. 16-74 and 2 engraved plates showing Davy's electrochemical apparatus for decomposing substances. The plates dampstained. Text fine and clean. � First appearence of this historical chemical paper Davy' fifth Bakerian Lecture in which he announced his discovery of hydrogen telluride.<br><br>"Mr. Davy having from the commencement of his electro-chemical researches communicated the several steps of his progress to the Society The Royal Society takes the present opportunity of reporting the results of his further inquiries under four principal heads. First on the nature of the metals of the fixed alkalis. Second on the nature of Hydrogen and composition of ammonia. Thirdly on the metals of the earth; and Fourthly he makes a comparison between the antiphlogistic doctrine and a modified phlogistic hypothesis."Abstract. He further gives arguments for considering potassium and sodium which he discovered in 1808 as a element.<br><br>"Humphry Davy was one of the most brilliant chemists of the early nineteenth century. His early study of nitrous oxide brought him his first reputation but his later and most importent investigations were devoted to electrochemistry. Following Galvani's experiments and the discovery of the voltaic pile interest in galvanic electricity had become widespread. The first electrolysis by means of the pile was carried out in 1800 by Nicholson and Carisle who obtained oxygen and hydrogen from water. Davy began to examine the chemical effects of electricity in 1800 and his numerous discoveries were presented in his Bakerian lectures." - Wheeler Gift: 2518. unknown‎

书商的参考编号 : 42219

‎DAVY HUMPHRY THE DISCOVERY OF POTASSIUM AND SODIUM.‎

‎The Bakerian Lecture on some new Phenomena of chemical Changes produced by Electricityparticularly the Decomposition of the fixed Alkalies and the Exhibition of the new substances which constitute their bases; and on the general Nature of alkaline Bodies. Read November 19 1807.‎

‎London W. Bulmer and Co. 1808. 4to. No wrappers as extracted from "Philosophical Transactions" 1808 - Part I. Pp. 1-44. � First printing of this importent historical paper in chemistry in which Davy shows that electricity is capable of decomposing some alkalies isolating two new substances and discovering potassium and sodium. <br>Neville in his Historical Chemical Library vol. I p.340 writes about this paper "ONE OF THE GREAT CLASSIC RESEARCHES IN CHEMISTRY in which Davy announced in this his second Bakterian lecture the isloation of metallic potassium and sodium by the electrolytic decomposition of their fused oxides."<br><br>"He Davy began his own electrical experiments.The results were spectacular. On October 6 1807 the current passing through molten potash liberated a metal which Davy called potassium. The little globules of shining metal tore the water molecule apart as it eagerly recombined with oxygen and the liberated hydrogen burst into lavender flame. Davy danced about in a delirium of joy. A week later he isolated sodium from soda."Asimow. The paper offered here describes these discoveries.<br><br>"Humphry Davy was one of the most brilliant chemists of the early nineteenth century. His early study of nitrous oxide brought him his first reputation but his later and most importent investigations were devoted to electrochemistry. Following Galvani's experiments and the discovery of the voltaic pile interest in galvanic electricity had become widespread. The first electrolysis by means of the pile was carried out in 1800 by Nicholson and Carisle who obtained oxygen and hydrogen from water. Davy began to examine the chemical effects of electricity in 1800 and his numerous discoveries were presented in his Bakerian lecture to the Royal Society on November 20 1806.<br>A Source Book in Chemistry p. 243. - Wheeler Gift: 2514. unknown‎

书商的参考编号 : 42218

‎Dawson, Samuel Edward‎

‎The Saint Lawrence Basin and Its Border-Lands [Borderlands] - Being the Story of Their Discovery, Exploration and Occupation‎

‎xl, 451, 4 [ads] pages. Two large colour fold-out maps of North American drainage basins by J.G. Bartholomew; Black and white photographic plates and diagrams. "In the following pages an attempt has been made to set forth in order the chief facts relating to the discovery and exploration of the northeastern part of the continent of North America." - Preface. Professionally rebacked using original cloth. Unmarked with average wear. Small tape repair to first fold-out map. Second fold-out map loose but present with minor loss to one corner. A sound copy. MORLEY [Ontario] p.7, MORLEY [Atlantic] p.3. Book‎

‎day of discovery Editor‎

‎Day of Discovery DVD Club Special Edition July 2012‎

‎dod 2012. DVD-ROM. New. dod unknown‎

书商的参考编号 : 140920022

‎DAZERGUES, Max-André.‎

‎Le Noyé bleu.‎

‎1940 Agence Parisienne de Distribution Editeur, collection "REX" N° 19 - 1940 - 1 fascicule in-8, broché couverture illustrée - 63 pages‎

‎Plis sur la bordure supérieure, tampons d'appartenance, sinon bon état.‎

书商的参考编号 : 72388

‎DE RYCK Raymond et OURS Lucien de‎

‎"Sur la route des épices, via Le Caire; escales en Inde, en Thaillande et à Hong-Kong."‎

‎Tielt (Belgique), Lannoo, 1971. 15 x 21, 224 pp., 1 carte dépliante, 1 illustration en couleurs, broché, bon état (couverture défraîchie).‎

书商的参考编号 : 45043