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DAVY, HUMPHRY - THE DISCOVERY OF POTASSIUM AND SODIUM (FRENCH VERSION).Biblio.com

180950198Paris 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 Mémoires 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. 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. unknown

FARADAY, MICHAEL - THE DISCOVERY OF ELECTRO-MAGNETIC INDUCTION (PMM 308) - FRENCH VERSIONBiblio.com

Recherches expérimentales sur l'Electricité. § I-V. I. Sur l'induction des courans l'èlectriques. II. Sur le développement de l'électricité par le magnetisme. III. Sur une nouvelle condition électrique de la matière. IV. Sur les phénomènes magnét.

183244145Paris Crochard 1832. Contemp. hcalf. gilt spine light wear along edges. In: "Annales de Chimie et de Physique Par MM. Gay-Lussac et Arago." tome 50 Series 2. Entire volume offered. 448 pp. 2 folded engraved plates. Faraday's papers: pp. 5-67 a. pp. 113-162. First French editions of the 2 first memoirs of Faradays groundbreaking researches on electricity constituting the first 2 papers of his "Experimental Researches in Electricity" and containing his fundamental discovery of electromagnetic induction THE FOUNDATION OF NEARLY ALL THE ELECTRICITY IN USE TODAY. In 1820 Oersted had generated magnetism from electricity Faraday here finds the opposite effect generating electricity by magnetism. He also described the first electrical generator second paper. THESE PAPERS ARE SOME OF THE GREAT CLASSICS OF CHEMISTRY AND PHYSICS."Faraday demonstrated this theory involving the lines of force.by inserting a magnet into a coil of wire attached to a galvanometer. While the magnet was being inserted or removd current flowed through the wire. If the magnet was held stationary and the coil moved over it one way or the other there was current in the wire. In either case the magnetic lines of force about the magnet were cut by the wire.If the magnet and coil were both held motionless whether the magnet was within the coil or not there was no current.Faraday hd thus discovered electricalinduction.It was to lead to great things but this was not apparent."Asimov."Although his discovery of the electric motor and the dynamo was almost entirely identical to his theoretical discoveries it laid the foundation of the modern electrical industry - electric light and power teælephony wireless telegraphy televison etc. - by providing for the production of continous mechanical motion from an electrical source and vice versa." PMM 308.Horblit 29 - Milestones 62. - Dibner 64. - PMM 308. unknown

Herman H. J. Lynge & Søn A/S · Danemark10 000,00 DKK≈ 1 343,00 €

FARADAY, MICHAEL - THE DISCOVERY OF ELECTRO-MAGNETIC INDUCTION (PMM 308) - FRENCH VERSIONBiblio.com

Recherches expérimentales sur l'Electricité. § I-V. I. Sur l'induction des courans l'èlectriques. II. Sur le développement de l'électricité par le magnetisme. III. Sur une nouvelle condition électrique de la matière. IV. Sur les phénomènes magnét.

183248987Paris Crochard 1832. Contemp. hcloth gilt lettering to spine. In: "Annales de Chimie et de Physique Par MM. Gay-Lussac et Arago." tome 50 Series 2. Entire volume offered. 448 pp. 2 folded engraved plates. Faraday's papers: pp. 5-67 a. pp. 113-162. Some scattered brownspots. First French editions of the 2 first memoirs of Faradays groundbreaking researches on electricity constituting the first 2 papers of his "Experimental Researches in Electricity" and containing his fundamental discovery of electromagnetic induction THE FOUNDATION OF NEARLY ALL THE ELECTRICITY IN USE TODAY. In 1820 Oersted had generated magnetism from electricity Faraday here finds the opposite effect generating electricity by magnetism. He also described the first electrical generator second paper. THESE PAPERS ARE SOME OF THE GREAT CLASSICS OF CHEMISTRY AND PHYSICS."Faraday demonstrated this theory involving the lines of force.by inserting a magnet into a coil of wire attached to a galvanometer. While the magnet was being inserted or removd current flowed through the wire. If the magnet was held stationary and the coil moved over it one way or the other there was current in the wire. In either case the magnetic lines of force about the magnet were cut by the wire.If the magnet and coil were both held motionless whether the magnet was within the coil or not there was no current.Faraday hd thus discovered electricalinduction.It was to lead to great things but this was not apparent."Asimov."Although his discovery of the electric motor and the dynamo was almost entirely identical to his theoretical discoveries it laid the foundation of the modern electrical industry - electric light and power teælephony wireless telegraphy televison etc. - by providing for the production of continous mechanical motion from an electrical source and vice versa." PMM 308.Horblit 29 - Milestones 62. - Dibner 64. - PMM 308.The volume contains further notable papers. Elie de Beaumont "Zweiter geologischer Brief.an A.v. Humboldt über die relative Alter der Gebirgszüge" pp. 1-58 a. 2 plates one handcoloured papers by Döbereiner E. Lenz Moser Mitscherlich de Saussure J. Dumas F.E. Neumann Gay-Lussac Johannes Müller "Beobachtungen zur Analyse der Lymphe des Bluts und des Chylus" pp. 513-590. hardcover

Herman H. J. Lynge & Søn A/S · Danemark8 500,00 DKK≈ 1 141,55 €

PASTEUR, LOUIS - DISCOVERY OF "MOLECULAR ASSYMETRY"Biblio.com

Recherches sur les relations qui peuvent exister entre la forme cristalline la composition chimique et le sens de la polarisation rotatoire. Note sur la Cristallisation du soufre. Memoir on the relation that can exist between crystalline form an.

184849336Paris Victor Masson 1848 a. 1851. 8vo. 2 contemp. hcalf raised bands gilt spine. Light wear along edges. Small stamps on verso of titlepages and on verso of 1 plate. In "Annales de Chimie et de Physique" 3me Series - Tome XXIV and XXXI. 6512 pp. and 2 plates 512 pp. a. 4 plates.2 entire volumes offered. Pasteur's papers: pp. 442-459 a. pp. 459-460 1 double-page folded engraved plate pp. 67-102 a. 1 plate. Some scattered brownspots to first part of the first volume not affecting P's papers. First full exposition of Pasteur's momentous and revolutionary discovery of "molecular assymetry" and founding the science of Polarimetry.The discovery was first announced by Pasteur in may 1848 by the printing of the preliminary report of only 4 short pages in order to establish priority. The announcement - 4 pages - was published in Comptes rendus hebdomadaires de l’Académie des Sciences Paris Seance of May 15 1848 26 21 535-538 Published on May 1848."In 1848.Pasteur studied the crystals of tartrates one of the substances that exhibited the now-clockwise now-counterclockwise effect under the microscope and found that the crystals were mirror images of the others. The two crystals resembled each other as a right-hand glove resembles a left-hand glove.This was a revolutionary discovery and it took some courage to announce it. A few years before the well-known chemist Mitscherlich had studies the same tartrate crystals and declared them all to be identical. Pasteur was only a twenty-sic-year-old unknown. neverthelless he announced his findings and went before Biot to repeat the separation ofthe crystals before the eyes of the aged authority in the field. Biot was convinced and Pasteur received the Rumford medal of the Royal Society for his work.Pasteur had thus founded the science of polarimetry in which the measurements of the manner in which the plane of polarized light was twisted could be used to help to determine the structure of organic substance to follow various chemical reactions and so on."Asimov. Leicester & Klickstein "A Source Book of Chemistry" p. 374-379. hardcover

Herman H. J. Lynge & Søn A/S · Danemark15 000,00 DKK≈ 2 014,50 €

CURIE, (MARIE) SKLODOWSKA - THE DISCOVERY OF THE RADIOACTIVITY OF THORIUM - COINING THE TERM 'RADIOACTIVITY'Biblio.com

Rayons émis par les composés de l'uranium et de thorium. Presentée par M. Lippmann. Séance du Mardi 12 Avril 1898.

189846852Paris Gauthier-Villars 1898. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances 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."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.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 Académie 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:"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.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

Herman H. J. Lynge & Søn A/S · Danemark6 500,00 DKK≈ 872,95 €

HENRY, JOSEPH - THE DISCOVERY OF SELF-INDUCTIONBiblio.com

On the Influence of a Spiral Conductor in increasing the Intensity of Electricity from a Galvanic Arrangement of a Single Pair &c.

183747418London Richard and John E. Taylor 1837. No wrappers. Extracted fron "Scientific Memoirs selected from The Transactions of Foreign Academies of Science and Learned Societies. Edited by Richard Taylor." Vol. I. Pp. 540-547. Henry's milestone paper announcing his discovery of electrical self-induction. "Henry independently discovered electro-magnetic induction and in this paper announced his discovery of electric self-induction one of the prime properies of an electro-magnetic circuit. Henry was an eminent experimenter but was casual in publishing his findings with resulting lack of recognition of his contributions."Bern Dibner.Dibner "Heralds of Sciece" No.63.It was also printed the same year in "Transactions of the American Philosophical Society New Series Vol. 5". The paper was later printed in "Philosophical Magazine" 1840."The direction of Henryâ€™s thought became somewhat apparent in his 1835 paper refers to the papers reading before the American Phil. Soc. febr. 6th 1835 on the action of a spiral conductor in increasing the intensity of galvanic currents. The paper started out as an affirmation of Henryâ€™s priority in the discovery of self-induction. He then combined induction proper using Faradayâ€™s findings and his own with selfinduction to show how these produce a pattern of repulsions yielding an increased effect in spirals. He specifically linked these â€œmagneto-electricalâ€ results to the principles of static induction developed by Cavendish and Poisson. This explanation was then applied to Savaryâ€™s report of changes of polarity when magnetic needles were placed at varying distances from a wire in which a current was being transmitted "MÃ©moire sur lâ€™aimantation" in Annales de chimie et de physique 34 1827. That is currents appeared periodically in the air surrounding a current-bearing straight wire as a result of the actions of induction and self-induction." DSB.Wheeler Gift: 2724-2725a. unknown

Herman H. J. Lynge & Søn A/S · Danemark3 500,00 DKK≈ 470,05 €