# Walter Gerlach > German physicist (1889-1979) **Wikidata**: [Q61745](https://www.wikidata.org/wiki/Q61745) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Walther_Gerlach) **Source**: https://4ort.xyz/entity/walter-gerlach ## Summary Walter Gerlach (1889-1979) was a German physicist and university teacher known for his contributions to nuclear physics and magnetism. He is most famous for his role in the Stern-Gerlach experiment, a landmark study in quantum mechanics that demonstrated the quantization of angular momentum. ## Biography - Born: August 1, 1889 - Nationality: German - Education: University of Tübingen - Known for: Stern-Gerlach experiment - Employer(s): University of Tübingen, Goethe University Frankfurt, Ludwig-Maximilians-Universität München, University of Göttingen, University of Bonn - Field(s): Physics, Nuclear Physics, Magnetism ## Contributions Walter Gerlach co-conducted the Stern-Gerlach experiment in 1922, which provided experimental evidence for the quantization of angular momentum in atoms. This experiment became a cornerstone in the development of quantum mechanics. He also contributed to the field of nuclear physics and was a member of the Göttingen Eighteen, a group of German nuclear researchers who authored the 1957 Göttingen Manifesto. ## FAQs **What is Walter Gerlach best known for?** Walter Gerlach is best known for his role in the Stern-Gerlach experiment, which demonstrated the quantization of angular momentum in atoms, a fundamental concept in quantum mechanics. **Where did Walter Gerlach work?** Gerlach held positions at several German universities, including the University of Tübingen, Goethe University Frankfurt, Ludwig-Maximilians-Universität München, University of Göttingen, and University of Bonn. **What awards did Walter Gerlach receive?** Gerlach received several awards, including the Bavarian Order of Merit, the Pour le Mérite for Sciences and Arts, and the Harnack Medal. **What was the significance of the Stern-Gerlach experiment?** The Stern-Gerlach experiment provided crucial experimental evidence for the quantization of angular momentum, confirming predictions of quantum theory and influencing the development of quantum mechanics. ## Why They Matter Walter Gerlach's work, particularly the Stern-Gerlach experiment, was pivotal in validating the principles of quantum mechanics. The experiment's findings not only confirmed theoretical predictions but also laid the groundwork for future research in atomic and nuclear physics. Gerlach's contributions influenced generations of physicists and remain a fundamental part of physics education and research. ## Notable For - Co-conducting the Stern-Gerlach experiment (1922) - Member of the Göttingen Eighteen (1957) - Recipient of the Bavarian Order of Merit, Pour le Mérite for Sciences and Arts, and Harnack Medal - Affiliations with multiple prestigious German universities ## Body ### Early Life and Education Walter Gerlach was born on August 1, 1889. He studied physics at the University of Tübingen, where he later became a professor. His academic background laid the foundation for his contributions to experimental physics. ### Career Gerlach held positions at several prominent German universities, including the University of Tübingen, Goethe University Frankfurt, Ludwig-Maximilians-Universität München, University of Göttingen, and University of Bonn. His career spanned both theoretical and experimental physics, with a focus on nuclear physics and magnetism. ### Major Contributions #### Stern-Gerlach Experiment (1922) Gerlach's most significant contribution was his role in the Stern-Gerlach experiment, conducted with Otto Stern. This experiment demonstrated the quantization of angular momentum in atoms by observing the deflection of silver atoms in a non-uniform magnetic field. The results provided critical evidence for the principles of quantum mechanics. #### Göttingen Eighteen (1957) Gerlach was one of the eighteen German nuclear researchers who authored the Göttingen Manifesto in 1957. This document opposed the arming of the West German army with tactical nuclear weapons, reflecting Gerlach's ethical stance on nuclear technology. ### Awards and Recognition Gerlach received numerous awards for his contributions to science, including the Bavarian Order of Merit, the Pour le Mérite for Sciences and Arts, and the Harnack Medal. These honors recognized his impact on physics and his dedication to scientific research. ### Affiliations Gerlach was affiliated with several scientific organizations, including the German Academy of Sciences Leopoldina, the Bavarian Academy of Sciences and Humanities, and the Göttingen Academy of Sciences and Humanities. He was also a member of the International Academy of the History of Science. ### Legacy Walter Gerlach's work, particularly the Stern-Gerlach experiment, remains a cornerstone of quantum mechanics. His contributions to nuclear physics and his ethical stance on nuclear weapons have left a lasting impact on both science and society. Gerlach's legacy is celebrated through awards like the Stern-Gerlach Medal and his continued influence on physics education and research. ## References 1. Integrated Authority File 2. BnF authorities 3. LIBRIS. 2018 4. Mathematics Genealogy Project 5. Czech National Authority Database 6. [Szenoramen oder was Goldfinger mit Licht und Quanten zu tun hatte - Deutsches Museum. 2024](https://blog.deutsches-museum.de/2024/07/26/szenoramen-oder-was-goldfinger-mit-licht-und-quanten-zu-tun-hatte) 7. International Standard Name Identifier 8. Virtual International Authority File 9. CiNii Research 10. [Source](https://kalliope-verbund.info/DE-611-BF-26501) 11. SNAC 12. Frankfurter Personenlexikon 13. Brockhaus Enzyklopädie 14. Proleksis Encyclopedia 15. Munzinger Personen 16. Freebase Data Dumps. 2013 17. Hessian Biography 18. nobelprize.org 19. Hitler's Uranium Club: The Secret recordings at Farm Hall, 2nd edition 20. Treccani's Enciclopedia on line 21. Bibliography of the History of the Czech Lands