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1924réf. 48872Braunschweig Berlin Vieweg & Sohn u. Julius Springer 1924. 8vo. Contemp. hcloth. In: Zeitschrift für Physik" Bd. 24. IV412 pp. Entire volume offered. The paper: pp. 69-87. A stamp on titlepage. Clean and fine. First apperance simultaneously printed in Philosophical Magazine of a fundamental paper in the development of the Quantum Theory as it here was set forth three fundamental ideas: 1. Slater's idea of 'a Virtual radiation field' 2. statistical conservation of energy and momentum and 3. statistical independence of the processes of emission and absorption in distant atoms. See Van der Waerden "Sources of Quantum Mechanics" No. 5. hardcover
1921réf. TECH0786Wien u. Lpz., Deuticke 1921. gr.-8°, 2 Bl. Titele, 26 S., mit 10 Abb. im Text, OKart., unaufgeschn., verstaubt, einige Randrisse, Rü. beidseitig eingerissen, Reste eines Klebeschildchens am RüSchwanz u. Vorderdeckel, Innentit. zweimal bestemp. m. einigen hs. Buntstiftverm., Klammerheftung verrostet, innen im Falz einige Rostfl.