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Die Muttersubstanz des Actiniums, ein neues radioaktives Element von langer Lebensdauer."

Otto Hahn, Erwin Schrodinger, Albert Einstein

Editorial: Physikalische Zeitschrift, volume XIX,, 1918
Condición: Very Good Encuadernación de tapa dura
Librería: JF Ptak Science Books (Hendersonville, NC, Estados Unidos de America)

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HAHN, Otto and Lise Meitner. "Die Muttersubstanz des Actiniums, ein neues radioaktives Element von langer Lebensdauer." in Physikalische Zeitschrift, 1918, volume XIX, No. 10, pp 208-218. Offered in the full issue of pp ii, (201)-224, iii-iv. The following also included in the same volume XIX, 556pp. The second half of the book has a paper stock of inferior quality to the earlier months, as is common with the Physikalische Zeitschrift in the postwar years. There is so much of interest, including three papers by Schroedinger with two responses by Einstein, as well as numerous other interesting articles. +++ Offered with: SCHROEDINGER, Erwin. "Notiz über die Ordnung in Zufallsreihen”, pp 218-220, same issue. And also with a good opening paper by Arthur Korn, “Mechanische Theorien des elektromagnetischen Feldes”. “.Hahn and Meitner in 1917 discovered the most stable isotope of the element 91, which they named protactinium (the original discoverers of this element, Fajans and Göhring in 1913, had named their short-lived isotope brevium). This parent of actinium helped resolve the uncertain sequence in the actinium series, although recognition that it was entirely independent of the uranium series (descended from U238) did not come until the discovery of actinouranium (U235) (the existence of which was inferred from Aston’s mass-spectrographic work in 1929), the ultimate source of this series. After the discovery of protactinium, Hahn believed that it descended, through uranium Y (Th231), from primordial uranium in a branch parallel with the well-known uranium series. His subsequent examination of uranium and its products turned up in 1921 a small, but persistent and inexplicable, activity in the uranium series’ protactinium isotope. Here was a case of branching, but not the one Hahn was looking for. He had found that the first example of nuclear isomerism, i.e., uranium Z, has the same parent and the same daughter product as uranium X2 and both these protactinium isotopes are formed by, and decay by, beta emission. But their nuclei are at different energy levels and decay with different half-lives.”--"Hahn, Otto." Complete Dictionary of Scientific Biography. Vol. 6. Detroit: Charles Scribner's Sons, 2008. 14-17. SCHROEDINGER, E. “Die Energiekomponenten des Gravitationsfeldes”, in Physikalische Zeitschrift, January 1 1918, volume XIX, #1, pp 4-7 in the issue of pp 1-16. Also in this issue: Arthur Korn, “Mechanische Theorien des elektromagnetischen Feldes VI, pp 10-13. +++With: SCHROEDINGER, E. “Ueber ein Loesungssystem der allgemein kovarianten Gravitationsgleichungen”, in January 15, 1918 issue, pp 20-22. +++Offered with: EINSTEIN, A. “Notiz zu E. Schroedingers Arbeit “Die Energiekomponenten des Gravitationsfeldes”, same journal, pp 115—116, volume XIX, no. 6, March 15, 1918, pp 105-128. (Also with in this issue: Ludwig Flamm, “Zum Gegenwartiggen Stand der Quantentheorie, pp 116-128 (a very long article for the PZ.) +++And with: EINSTEIN, A. “Bemerkung zu Herrn Schroedingers Notiz 'Ueber ein Loesungssystem der allgemein kovarianten Gravitationsgleichungen”, April 15, 1918, same volume, issue no. 8, p 165-166 in the issue of pp 153-176. (Also with Ludwig Flamm, “Bemerkungen zu den statistschen Grundlagen der Quantentheorie”, 166-168.). N° de ref. de la librería ABE-1472183352357

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Título: Die Muttersubstanz des Actiniums, ein neues ...

Editorial: Physikalische Zeitschrift, volume XIX,

Año de publicación: 1918

Encuadernación: Hardcover

Condición del libro:Very Good

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