Lise Meitner
Lise Meitner (1878–1968) was an Austrian-born physicist whose research on radioactivity and nuclear physics helped explain nuclear fission. After fleeing Nazi Germany in 1938, she continued working in Sweden and, with her nephew Otto Frisch, interpreted evidence that uranium nuclei could split after neutron bombardment. The 1944 Nobel Prize in Chemistry was awarded to her longtime collaborator Otto Hahn alone, although historical accounts have debated how credit for the discovery should be shared.
Early life and research
Meitner was born in Vienna on 7 November 1878, when the city was part of Austria-Hungary. She studied physics at the University of Vienna and received her doctorate in 1906. In 1907 she went to Berlin, where she began a long scientific collaboration with chemist Otto Hahn. Their joint work included research on radioactivity and the identification of protactinium.
Meitner became a leading experimental and theoretical physicist in a period when women faced substantial barriers in academic science. At the Kaiser Wilhelm Institute in Berlin, she led its physics section from 1918. Her research with Hahn and, later, chemist Fritz Strassmann focused on the products formed when uranium was exposed to neutrons.
Exile and the explanation of fission
Because of her Jewish ancestry, Meitner had to leave Nazi Germany in 1938. She settled in Sweden, while maintaining contact with Hahn, who remained in Berlin. In late 1938, Hahn and Strassmann's chemical analysis showed that neutron-bombarded uranium had produced barium, a much lighter element. Meitner and her nephew, physicist Otto Frisch, explained the result as a uranium nucleus splitting into smaller parts. Their account introduced the term “fission” in 1939.
This distinction matters: Hahn and Strassmann supplied the key chemical evidence, while Meitner and Frisch provided the physical interpretation. The discovery became foundational to nuclear physics and later had both energy and military consequences. Meitner rejected an invitation to work on the Manhattan Project and opposed the use of atomic bombs.
Recognition and legacy
The Nobel Prize in Chemistry for 1944 was awarded to Hahn alone for the discovery of fission; he received the prize in 1945. Meitner was therefore not a Nobel co-laureate, despite her central role in explaining the process. Britannica notes that some have argued Meitner merited a share of the prize; the official Nobel record, however, lists Hahn as its sole laureate.
Meitner continued nuclear research after the war, first in Sweden and later in England. She died in Cambridge on 27 October 1968. In 1997, the chemical element meitnerium was named in her honour, recognizing her place in the history of nuclear physics.
Key facts
- Born
- 7 November 1878 in Vienna, then part of Austria-Hungary.
- Field
- Physics, especially radioactivity and nuclear physics.
- Fission work
- With Otto Frisch, she explained the physical process of uranium fission in 1939 after experiments by Otto Hahn and Fritz Strassmann.
- Nobel Prize in Chemistry 1944
- Awarded to Otto Hahn alone; he received the prize in 1945.
- Namesake
- The chemical element meitnerium (element 109) was named in her honour in 1997.
Timeline
1878
Lise Meitner was born in Vienna.
1906
She received her doctorate in physics from the University of Vienna.
1938
She fled Nazi Germany and settled in Sweden.
1939
Meitner and Otto Frisch published their physical interpretation of uranium fission and used the term “fission.”
1944
The Nobel Prize in Chemistry for the discovery of fission was awarded to Otto Hahn alone; he received it in 1945.
1968
Meitner died in Cambridge, England.
1997
Element 109 was named meitnerium in her honour.
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References
- 1.Lise Meitner Biography & Facts
Encyclopaedia Britannica · encyclopedia · reliability: high · retrieved 17 October 2026
Supports: Biographical overview, education, Berlin research, exile, fission interpretation and legacy.
- 2.Otto Hahn, Lise Meitner, and Fritz Strassmann
Science History Institute · other · reliability: high · retrieved 17 October 2026
Supports: Historical account of the collaboration, the experimental evidence for fission and Meitner's theoretical interpretation.
- 3.Discovery of Nuclear Fission
American Physical Society · other · reliability: high · retrieved 17 October 2026
Supports: Scientific chronology, Meitner's 1938 exile, explanation of fission and her rejection of atomic-weapons work.
- 4.Women in Radiation History: Lise Meitner
United States Environmental Protection Agency · other · reliability: high · retrieved 17 October 2026
Supports: Career, flight from Nazi Germany and the naming of meitnerium.
- 5.Otto Hahn – Facts
Nobel Prize Outreach · other · reliability: high · retrieved 17 October 2026
Supports: The 1944 Chemistry prize was awarded to Hahn alone and outlines Meitner and Frisch's theoretical explanation of uranium fission.
References are suggested by the research engine and may be incomplete. Unverified URLs are omitted rather than guessed.
Article history
- Version 117 October 2026 · EditorCreated by Zapia