‎Charles Dobzynski‎
‎table des éléments ‎

‎The High-Frequency Spectra of the Elements, I-II. - [ESTABLISHING ORDER IN THE PERIODICAL TABLE OF ELEMENTS - PMM 407]‎

‎London, 1913 & 1914. 8vo. 2 volumes, uniformly bound with the original wrappers in recent full blue cloth. In ""The London, Edinburgh and Dublin Philosophical Magazine"", Sixth Series, Vol. 26, no. 156, December 1913 & vol. 27, no. 160, April 1914. Lower part of index (pp. 1059-1064) in vol 26 with horisontal repair to lower part, affecting last three line (but legible). A fine and clean set. Moseley's papers: pp. 703-13" pp. 1024-1034. [Entire issues: pp. 937-1064" pp. 541-756].‎

‎First edition of these groundbreaking papers, in which the arrangement of the elements in the periodic table was based on the atomic number and which thus placed the atomic table on a firm scientific foundation. ""Moseley, working under Rutherford at Manchester, used the method of X-ray spectroscopy devised by the Braggs to calculate variations in the wave-lenght of the rays emitted by each element. These he was able to arrange in a series according to the nuclear charge of the element. Thus if the nuclear charge of hydrogen is 1, in helium it is 2, in lithium 3, and so on by regular progression to uranium as 92. These figures Moseley called atomic numbers.he pointed out that they also represented a corresponding increase in extra-nuclear electrons and that it is the number and arrangement of these electrons rather than the atomic weight that determines the properties of an element. It was now possible to base the periodical table on a firm foundation, and to state with confidence that the number of elements up to uranium is limited to 92. When Moseley'stable was completed, six atomic numbers had no corresponding elements"" but Moseley himself was able to predict the nature of four of the missing elements.""(PMM 407). “In a very short time, Moseley produced the first of his two famous papers in which he showed the spectra of K radiation of ten different substances … Moseley arranged the spectra, one below the other in a step-like fashion, in such a way that a given wavelength was in the same position for all spectra. It then became clear by simple inspection of this ‘step ladder’ that the spectrum of K radiation of each element contains two strong lines (which Moseley called Ka (for the longer wavelength) and Kß (for the shorter) and that this pair of lines moves to shorter and shorter wavelengths in a monotonic fashion if one moves step by step from calcium to zinc Moseley's work made it clear once and for all that indeed the position number in the Periodic Table is equal to the number Z of positive elementary charges in the nucleus of an atom. It also showed that Z is more important for the spectroscopic and chemical properties of an atom than the atomic mass number A. This is evident in the case of the elements cobalt (Z = 27, A = 58.9) and nickel (Z = 28, A = 58.7), where even the order in A differs from that in Z.” (Brandt, The Harvest of a Century: Discoveries in Modern Physics in 100 Episodes) PMM 407Evans 62Norman 1599‎

‎Table des éléments. Poèmes‎

‎Paris Belfond 1978 1 vol. broché in-8, broché, 186 pp., musique notée. Edition originale sans grand papier. Envoi autographe signé de l'auteur à un poète et critique. Bon exemplaire.‎

‎Table des éléments‎

‎Paris, Pierre Belfond, 1978, in-8, 187 pp, Broché, couverture blanche imprimée en rouge, Édition originale de ce recueil de sonates comprenant partitions et paroles. Cet exemplaire est enrichi d'un envoi autographe signé de l'auteur à Mathieu Bénézet. Couverture légèrement roussie. Couverture rigide‎

‎Bon 187 pp.‎

‎TABLE DES ELEMENTS - POEMES.‎

‎BELFOND. 1978. In-8. Broché. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. 187 pages - nombreuses phrases musicales hors texte.. . . . Classification Dewey : 841-Poésie‎

‎ Classification Dewey : 841-Poésie‎

‎Sootnoshenie svoistv s atomnym vesom elementov [i.e. On the Relation of the Properties to the Atomic Weights of the Elements]. In: Zhurnal Russkogo khimicheskogo obshchestva [i.e. Journal of the Russian Chemical Society], vol.1, parts II-III. - [THE PERIODIC TABLE OF THE ELEMENTS]‎

‎St. Petersburg, 1869. 8vo. Extract in contemporary or slightly later blank blue paper wrappers. Wrappers with neat professional restorations from verso, barely noticeable. A very fine and clean copy. Pp. 60-77. ‎

‎Exceedingly scarce first printing of Mendeleev’s seminal Russian Chemical Society-paper of March 1869, presenting for the first time the periodical table of the elements. “His newly formulated law was announced before the Russian Chemical Society in March 1869 with the statement “elements arranged according to the value of their atomic weights present a clear periodicity of properties.” Mendeleev’s law allowed him to build up a systematic table of all the 70 elements then known.” (Encycl. Britt.) “Early in 1869, Russian chemist Dmitrii Mendeleev was in a predicament many people are familiar with—he was facing a deadline. He had delivered the first volume of his inorganic chemistry textbook to his publisher but was struggling with how to organize the second volume. This struggle would culminate in a remarkable discovery, a system that classified all of the chemical elements. In March 1869, Mendeleev delivered a full paper to the Russian Chemical Society spelling out the most significant aspect of his system, that characteristics of the elements recur at a periodic interval as a function of their atomic weight. This was the first iteration of the periodic law.” (OSU) Mendeleev’s system was not yet perfect when it appeared in 1869, but it would prove to be one of the most fundamental of scientific laws, one that would hold true through new discoveries and against all challenges. Mendeleev not only recognized that what seemed to be a randomness of the elements fitted into a system, he also suggested that the gaps in his system would later be filled with elements yet unknown to the scientific world. The discovery of new elements in the 1870s fulfilled several of Mendeleev’s predictions and brought increased interest to the periodic system, making it an invaluable tool for research. “He had such faith in the validity of the periodic law that he proposed changes to the generally accepted values for the atomic weight of a few elements and predicted the locations within the table of unknown elements together with their properties. At first the periodic system did not raise interest among chemists. However, with the discovery of the predicted elements, notably gallium in 1875, scandium in 1879, and germanium in 1886, it began to win wide acceptance. Gradually the periodic law and table became the framework for a great part of chemical theory. By the time Mendeleev died in 1907, he enjoyed international recognition and had received distinctions and awards from many countries.” (Encycl. Britt.) Horblit 74 Barchas 1412 [Dibner 48 - citing the German translation of 1891]‎