Noddack Ida Noddack Walter (2 results)
Published by Stockhom, 1939
- Softcover
Seller: Wissenschaftliches Antiquariat Köln Dr. Sebastian Peters UG, Köln, GermanyWissenschaftliches Antiquariat Köln Dr. Sebastian Peters UG
Contact seller5-star sellerBroschur. Condition: mäßig. 35 S., 21 cm, Einband leicht beschädigt, Rückseite mit Bleistiftmarkierung und Fleck, Inhalt gut erhalten. Sprache: deu.
Published by Naturwissenschaften, 1930
- Softcover
Seller: JF Ptak Science Books, Hendersonville, NC, U.S.A.JF Ptak Science Books
Contact seller5-star sellerCondition: Used - Very good
£ 34.24
£ 4.43 shippingShips within U.S.A.Quantity: 1 available
Add to basketSoft cover. Condition: Very Good. Ida and Walter Noddack,"Die Haufigkeit der chemische Elemente" in Naturwissenschaften, vol 18, 29 August 1930, heft 35, pp 759-772 with the Noddack on pp 759-764. Nice copy. Disbound cleanly from a larger bound volume. [++] Ida Noddack was nominated three times for the Nobel in chemistry but not… awarded one. "When Russian chemist Dmitry Mendeleyev proposed the periodic table of the chemical elements in 1871, he left gaps in places where he believed unknown elements would find their place. Two such gaps were below manganese at atomic numbers 43 and 75. Tacke [Ida maiden name of Ida Noddak], Noddack, and Berg set out to discover these two elements, and in 1925 they bombarded platinum and columbite ores with electrons, which collided with atomic nuclei that then emitted X-rays. The atomic number of an element could thus be deduced from the spectrum of X-rays that the nuclei emitted. They announced the detection of the two predicted elements: atomic number 43, which they called masurium, after the region in Prussia that Noddack had come from, and atomic number 75, which they called rhenium, after the Latin name for the Rhine River. In 1934 Italian physicist Enrico Fermi claimed possible production of atomic elements heavier than uranium (or transuranium elements) after bombardment of uranium with neutrons. However, in a paper on Fermi s discovery, Noddack noted in passing that the bombardment of uranium could have actually produced smaller nuclei. Her suggestion was the first proposal of the concept of nuclear fission. However, it was ignored at the time because it entailed such a broad departure from the accepted views of nuclear physics and was unsupported by clear chemical evidence. In 1938 German chemists Otto Hahn and Fritz Strassmann showed that the uranium had indeed split apart into lighter elements and that fission was possible. In 1939 Noddack asserted her prior discovery of nuclear fission. Hahn and Strassmann refused to answer Noddack s charges."--Britannica.