Otto Hahn

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Related to Otto Hahn: Lise Meitner, Albert Einstein

Hahn, Otto

(ô`tō hän), 1879–1968, German chemist and physicist. His important contributions in the field of radioactivity include the discovery of several radioactive substances, the development of methods of separating radioactive particles and of studying chemical problems by the use of radioactive indicators, and the formation of artificial radioactive elements by bombarding uranium and thorium with neutrons. He received the 1944 Nobel Prize in Chemistry for splitting the uranium atom (1939) and discovering the possibility of chain reactions. The development of the atomic bomb was based on this work. Hahn was a member of the Kaiser Wilhelm Institute of Chemistry, Berlin, from 1912 and director from 1928 to 1944. He was in Allied custody (1944–46) and on his return to Germany became head of the Kaiser Wilhelm Gesellschaft, Göttingen (later reorganized as the Max Planck Gesellschaft).

Hahn, Otto


Born Mar. 8, 1879, in Frankfurt am Main; died July 28, 1968, in Göttingen. German physicist and radiochemist.

Hahn studied at the Universities of Marburg and Munich and was a professor in Berlin from 1910 to 1934. In 1912 he became associated with the Kaiser Wilhelm Institute for Chemistry in Berlin, where he conducted research with L. Meitner until 1938. In 1928, Hahn became director of the institute. He was president of the Max Planck Society in the Federal Republic of Germany from 1946 to 1960 and honorary president after 1960. Harm’s main work was devoted to research on radioactivity. Together with Meitner, he discovered several isotopes and a new radioactive element, protactinium. In 1921 he observed for the first time the phenomenon of nuclear isomerism among natural radioactive elements. He used methods of radioactivity to determine the age of rock and the processes of the formation of crystals. In 1938, together with F. Strassmann, he discovered the fission of the uranium nucleus under the impact of neutrons. This discovery was the first step in the use of nuclear energy. Hahn received the Nobel Prize in 1945 and was a member of many world academies.


Vom Radiothor zur Uranspaltung: Eine wissenschaftliche Selbst-biographic. Braunschweig, 1962.
In Russian translation:
Radioaktivnost’ i istoriia zemli. Moscow-Leningrad, 1933.
Prikladnaia radiokhimiia. Leningrad-Moscow, 1947.


Curie, M. Radioaktivnost’. Moscow-Leningrad, 1947. (Translated from French.)
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Otto Hahn of Reutlingen in the southwestern German state of Wurttemberg.
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Otto Hahn, su antiguo amigo, en un principio fue reacio a trabajar en la fision nuclear, pues estaba mas interesado en la radiactividad; sin embargo, Meitner logro entusiasmarlo en esa nueva linea de investigacion que pretendia analizar en detalle los llamados elementos transuranicos, que se suponia surgian en el momento del bombardeo de neutrones.
It is a direct result of Ruth Sime's efforts (more specifically, of a talk she gave at the 1990 International Congress of the History of Science in Munich) that, in a major historical exhibit at the Deutsches Museum commemorating the discovery of fission, the worktable exhibited for decades as Otto Hahn's, which had actually been Meitner's, has finally been acknowledged with the sign "The Experimental Apparatus with which the Team of Otto Hahn, Lise Meitner and Fritz Strassman Discovered Nuclear Fission in 1938."
The services offered in this procedure include the general refurbishment of the Otto Hahn Gymnasium Marktredwitz.
Hoai), Work phases 1 to 9 the city of gttingen is planning the expansion of the otto hahn gymnasium at carl-zeiss-strae 6 in 37081 gttingen.
In the course of the modernization work at the otto hahn gymnasium, scaffolding construction measures will be required in various stages of construction.
production, Delivery and distribution of school lunches (including fresh fruit, Salad bar and snacks) - otto hahn secondary school: Production kitchen and hot expenditure for otto hahn secondary school and scheffelgymnasium as well as vesperangebot in the school kiosk in the morning, - scheffelgymnasium: Warm issue with production in the otto hahn secondary school / kitchen as well as vesperangebot in the school kiosk in the morning, - produce school lunches in the production kitchen as fresh food and the output of the food in the refectory (including fresh fruit and salad bar and vesperversorgung) according to the specifications.
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Otto Hahn Reaschule: Production kitchen and hot expenditure for Otto Hahn secondary school and Scheffelgymnasium + Vesperangebot in the school kiosk in the morning.
Services concession: Supply of theobald ziegler school, Otto hahn school, Friedrich ebert school