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RAYLEIGH, LORD (JW STRUTT) and WILLIAM RAMSAY - THE DISCOVERY OF ARGON J WBiblio.com

Argon a New Constituent of the Atmosphere. Received and Read January 31 1895.

1895réf. 42221London Harrison and Sons 1895. 4to. No wrappers as extracted from "Philosophical Transactions" Vol. 186 - I Series A. Pp. 187-241 a. 8 textillustrations apparatus. Fine and clean. First printing of this importent paper in the history of chemistry Lord Rayleigh's most famous discovery announcing the discovery of this new gas the first finding of one of the rare gases inert gases having unusual properties and forming a distinct group in the periodic table and all with zero valency."The original paper in the "Philosophical Transactions" will undoubtly rank as a classic the investigation having been a particularly brilliant ine." Ernst von Meyer in History of Chemistry. For this discovery Lord Rayleigh and W. Ramsay received the Nobel Prize 1904.After having made several measuring of the densities of gases "Rayleigh came across a curious puzzle. With oxygen he always obtained the same density regardless of how the oxygen might be produced whether from one particular compound from a second compound or from the air. The situation was different with nitrogen. The nitrogen he obtained from air constantly showed a slightly higher density than the nitrogen he obtained from any of various compounds. Rayleigh could think of several ways in which the nitrogen obtained from air might be contaminated but none of the possibilities checked out experimentally. He was so frustrated that he went so far as to write to the journal "Nature" asking for suggestions. Ramsay a brilliant Scottish chemist asked permission to tackle the problem and received it. The upshot was that a new gas somewhat denser that nitrogen was discovered to exist in the atmosphere. It was named argon and it was the first of a series of rare gases of unusual properties whose existence had never been suspected."Asimow.Dibner Heralds of Science No. 50 - Neville Historical Chemical Library vol. II p.358. unknown

Herman H. J. Lynge & Søn A/S · Danemark5 500,00 DKK≈ 735,81 €

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.

1898réf. 46852Paris 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≈ 869,59 €

HENRY, JOSEPH - DISCOVERY OF SELF-INDUCTIONBiblio.com

Facts in reference to the Spark &c from along conductor uniting the poles of a Galvanic Battery.

1835réf. 47003Philadelphia Fraklin Institute 1835. 8vo. Later full green cloth. Tome-and titlelabels in leather with gilt lettering on spine. In: "Journal of the Franklin Institute of the State of Pennsylvania. Edited by Thomas P. Jones" Vol. XV. New series. Engraved frontisp. 2446 pp. 2 folded engraved plates and 2 folded engraved maps. Entire volume offered. Henry's announcement: pp. 169-70. A stamp to verso of frontispiece Library of Congress duplicate stamp. First printing of this importent paper the first to describe in detail how the phenomena of Self-Induction was discovered. Henry discovered the induction phenomena - how an electric current in one coil may set up a current in the other through the development of the magnetic field - independently of Faraday but Faraday was first to publish on electromagnetic induction. Henry's experiments with induction led him to his importent discovery of SELF-INDUCTION which is the phenomenon in which a change in electric current in a coil produces an induced emf in the coil itself. This phenomenon was also discovered inependently by Faraday but this time Henry had published first. The basic unit of inductance was to be called "the Henry". Relevant to the controversy between Faraday and Henry is the following statement by A D Bache Secretary of the American Philosophical Society introducing an abstract of Henry in J Franklyn Inst. 1835 pp. 169-70 H. Norman 1053 and the paper offerd: "A memoir on this subject has been since submitted to the Society containing an extension of the subject the primary fact in relation to which was observed by Professor Henry as early as 1832 and announced by him in the American Journal of Science. Mr. Faraday having recently entered upon a similar train of observations the immediate publication of the accompanying is important that the prior claims of our fellow countryman may not be overlooked."Spark Museum.Magee "Source Book in Physics" p. 515. hardcover

Herman H. J. Lynge & Søn A/S · Danemark6 500,00 DKK≈ 869,59 €

MULLER, JOHANNES & THEODOR SCHWANN - THE DISCOVERY OF PEPSIN, THE FIRST KNOWN ANIMAL ENZYME & THE "FIBRES OF REMAK"Biblio.com

Versuche über die künstliche Verdauung des geronnenen Eiweisses Müller & Schwann Ueber das Wesen des Verdauungsprocesses Schwann. 2 paers.

1836réf. 45406Berlin G. Eichler 1836. In "Archiv für Anatomie Physiologie und Wissenschaftliches Medicin Herausgegeben von Johannes Müller". Jahrgang 1836. Pp. 66-89 a. pp. 90-139. The entire volume offered in its 6 parts in 5 all 5 issues uncut with orig. printed warppers. 2CCXXIV390 pp. and 15 engraved plates. The 2 first issues with a faint dampstain to lower part of leaves and plates. First appearance of an importent paper in the history of biology in which Schwann describes his discovery and isolation of pepsin the substance in the stomach that aids digestion of eggwhite. It is the FIRST KNOWN ANIMAL ENZYME. The paper appeared at the same time in "Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff".Theodor Schwann 1810-1882 was a great German physiologist pathologist and experimenter. One of the founders of the cell doctrine and of the idea of the living nature of yeast. Born at Neuss near Düsseldorff. A catholic educated in the Jesuit Gymnasium in Cologne. Intended for the church but took to medicine. He was a pupil of Johannes Müller and a collegueand lifelong friend of J. Henle the anatomist. In Berlin Schwann was Johannes Müller's assistent for five years and it was then that he discovered pepsin in 1836 the paper offered.Parkinson "Breakthroughs" 1836 B. - Garrison & Morton no. 991.The first paper offered written together with Johannes Müller records the preliminary investigaions leading to the discovery of Pepsin. - Garrison & Morton no. 990.The volume also contains another famous paper by ROBERT REMAK "Vorläufige Mittheilung microscopischer Beobachtungen über den innern Bau der Cerebrospinalnerven und über die Entwicklung ihrer Formenelemente. Hierzu Tafel IV. Pp. 145-161. This paper contains the first announcement of his DISCOVERY OF "FIBRES OF REMAK" the non-medullated nerve-fibres. Garrison & Morton no. 1260. unknown

Herman H. J. Lynge & Søn A/S · Danemark6 500,00 DKK≈ 869,59 €

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