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SOMMERFELD, A - THE BOHR-SOMMERFELD MODEL OF THE ATOMBiblio.com

Zur Quantentheorie der Spektrallinien. I-III. I. Theorie der Balmerschen Serie. II. Die Feinstruktur der Wasserstoff- und der wasserstoffähnlichen Linien. III. Theorie der Röntgenspektren.

1916rif. 45027Leipzig Johann Ambrosius Barth 1916. Contemp. hcloth. Gilt lettering to spine. VIII888 a. 4 plates. entire volume offered. Sommerfelds paper: pp. 1-94 a. pp. 125-167. A stamp on verso of titlepage. Clean and fine. First appearance of Sommerfeld's elaborated version of the fine structure of the hydrogen atom in which he was the first to show that relativity theory gives a quantitative account of the fine structure and thus creating a general theory of spectral lines based on the quantum concepts."Sommerfeld's two papers.and a more elaborate version the paper offered.surely deserves a lenghty chapter in the history of the old quantum theory."Pais Bohr p. 186 ff."This extraordinary extension enrichment and precision of Bohr’s theory by Sommerfed contributed decisively to its rapid and widespread acceptance. Only five years after Bohr’s first publication Sommerfeld recognizing that the mathematical development of this quantum-theoretical atomic model had reached a conclusion of sorts undertook a comprehensive exposition of the field. HisAtombau and Spektallinien of which the first edition appeared late in 1919 immediately became the bible of atomic physics and its successive editions appearing almost annually in the early 1920’s chronicled the progress of this field up to the eve of the introduction of quantum mechanics."DSB. - Parkinson "Breakthroughs" 1916 P.The volume contains other notable papers by Paul S. Epstein "Zur Quantentheorie" Stark P. Ehrenfest "Adiabatische Invarianten und Quantentheorie" and A. Einstein "Über Friedrich Kottlers Abhandlung "Über Einsteins Ãquivalenzhypothese und die Gravitation" pp. 639-642. hardcover

Herman H. J. Lynge & Søn A/S · Danimarca1850,00 DKK≈ 247,50 €

SOMMERFELD, ARNOLD - SPATIAL QUANTIZATION AND FINE STRUCTURE - THE ATOMIC MODEL OF SOMMERFELDBiblio.com

Zur Quantentheorie der Spektrallinien. Fortzetzung. 2 Parts.

1918rif. 43820Leipzig Ambrosius Barth 1918. Without wrappers in "Annalen der Physik" Vierte Folge Bd. 51 No.17 a. 18. The entire issues offered. Pp. 1-124 a. pp. 125-236. Sommerfeld's papers: pp. 1-94 a. pp. 125-167. Punched in inner margins after cords. Clean and fine. First appearance of Sommerfeld's main contribution to Quantum Theory incorporating the "Sommerfeld Model" of the atom and his creation of a general theory of spectral lines based on quantum concepts."In the winter Semester 1914/15 his topic was the Bohr model. He extended it considerably and was able to find a number of new results which were published early in 1916 in the paper offered.The gist of Bohr's theory was the fact that it allowed only certain electron orbits. Sommerfeld tried to find the "quantum conditions" by which these orbits could be singled out from the classically allowed ones."Siegmund Brandt "The harvest of a Century" Episode 27 p. 110 ff."This extraordinary extension enrichment and precision of Bohr's theory by Sommerfeld contributed decisively to its rapid and widespread acceptance. Only five years after Bohr's first publicatuion Sommerfeld recognizing that the mathematical development of thsi quantum-theoretical atomic model had reached a conclusion of sorts undertook a comprehensive exposition of the field. His "Atombau und Spektrallinien" of which the first edition appeared late in 1919 immediately became the bible of atomic physics and its successive editions appearing almost annually in the early 1920's chronicled the progress of this field up to the eve of quantum mechanics."DSB XII p. 529.The offered papers contains also 2 importent contribution in the same field by Sommerfeld's pupils: Paul S. Epstein "Zur Quantentheorie" pp. 168-188 and J. Stark: "Der Träger der Haupt- un Nebenserien der Alkalien alkalischen Erden und des Heliums" pp. 220-236. unknown

Herman H. J. Lynge & Søn A/S · Danimarca4500,00 DKK≈ 602,02 €

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