Werner Heisenberg Timeline

(1901 - 1976)

Werner Heisenberg (1901–1976) was a German theoretical physicist and one of the key founders of quantum mechanics. He developed matrix mechanics in 1925 and introduced the uncertainty principle in 1927, fundamentally changing how science understands the behavior of subatomic particles. He was awarded the Nobel Prize in Physics in 1932 and led Germany's nuclear research program during World War II. More Less

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Early Life and Education

Werner Heisenberg born in Würzburg, Germany

Dec 5, 1901

Werner Karl Heisenberg was born in Würzburg, Bavaria, to August Heisenberg, a secondary school teacher of classical languages, and his wife Annie. He would grow up to become one of the most influential theoretical physicists of the twentieth century.

Image source: Werner Heisenberg

Family moves to Munich

1910

The Heisenberg family relocated to Munich when August Heisenberg was appointed professor of Greek philology at the University of Munich, where Werner would later pursue his university studies.

Graduates from Maximilians-Gymnasium in Munich

1920

Heisenberg completed his secondary education at the Maximilians-Gymnasium in Munich, where he excelled in mathematics and science and also developed a strong interest in music.

Begins studies at the University of Munich under Arnold Sommerfeld

1920

Heisenberg entered the University of Munich to study physics under Arnold Sommerfeld, one of the leading figures in the old quantum theory, joining a circle of exceptionally talented students including Wolfgang Pauli.

Image source: Arnold Sommerfeld

Begins studies at the University of Munich under Arnold Sommerfeld

Studies with Max Born in Göttingen

1922 - 1923

Heisenberg spent time at the University of Göttingen studying under Max Born, deepening his engagement with the mathematical problems of atomic theory and connecting with a major center of quantum research.

Image source: University of Göttingen

Earns doctorate at Munich with thesis on turbulence

Jul 1923

Heisenberg received his doctorate from the University of Munich under Sommerfeld with a dissertation on the stability of laminar flow and turbulence, work that had lasting value in fluid dynamics.

Earns habilitation under Max Born

1924 - 1925

Heisenberg completed his habilitation qualification at Göttingen, allowing him to teach at university level, while continuing his groundbreaking research on quantum theory.

Image source: Habilitation

Scientific Contributions

Becomes assistant to Max Born in Göttingen

1923 - 1925

After completing his doctorate, Heisenberg worked as Max Born's assistant at Göttingen, collaborating on problems of quantum mechanics and developing the mathematics of their joint research.

Image source: Max Born

Publishes paper on the anomalous Zeeman effect

1924

Heisenberg contributed important early papers on atomic spectra, including work on the anomalous Zeeman effect, which challenged classical models and pointed toward the need for a fundamentally new quantum mechanics.

Image source: Zeeman effect

Creates matrix mechanics, founding modern quantum mechanics

Jun 1925 - Jul 1925

While recovering from hay fever on the island of Helgoland, Heisenberg formulated his 'umdeutung' (reinterpretation) paper, which abandoned electron orbits and described observables through arrays of numbers. This work became matrix mechanics, the first complete formulation of quantum mechanics.

Publishes Born-Jordan-Heisenberg matrix mechanics paper

Sep 1925 - Nov 1925

Together with Max Born and Pascual Jordan, Heisenberg published the 'three-man paper' that gave his new quantum theory rigorous mathematical form using matrices, establishing non-commuting quantities as central to physics.

Appointed professor at Leipzig University

1927

At only 25 years old, Heisenberg was appointed professor of theoretical physics at Leipzig University, where he built one of Europe's leading centers for quantum physics and mentored a generation of talented students.

Image source: Leipzig University

Collaborates with Niels Bohr in Copenhagen

Feb 1927

As a lecturer at the Institute for Theoretical Physics in Copenhagen, Heisenberg worked closely with Niels Bohr, engaging in famous debates over the interpretation of quantum mechanics that shaped the Copenhagen interpretation.

Image source: Niels Bohr

Formulates the uncertainty principle

Mar 1927

In a letter to Wolfgang Pauli and then a seminal paper, Heisenberg articulated the uncertainty principle, showing that position and momentum cannot both be known with arbitrary precision, a foundational insight into the limits of measurement in quantum physics.

Image source: Uncertainty principle

Publishes work on nuclear forces and isospin

1932 - 1933

Following Chadwick's discovery of the neutron, Heisenberg proposed that atomic nuclei consist of protons and neutrons bound by exchange forces, introducing concepts that evolved into isospin and laying groundwork for nuclear physics.

Image source: Isospin

Publishes work on nuclear forces and isospin

Awarded the Nobel Prize in Physics

Nov 9, 1932

Heisenberg received the 1932 Nobel Prize in Physics (announced in 1933) for the creation of quantum mechanics, recognizing his role as the founder of the theory whose application led to the discovery of hydrogen's allotropic forms.

Image source: Nobel Prize in Physics

Nazi Germany Era

Targeted by Nazi attacks on 'Jewish physics'

1936 - 1939

Proponents of the 'Deutsche Physik' movement attacked Heisenberg as an adherent of so-called 'Jewish physics' because of his relativity and quantum theory work and his associations with Jewish scientists, even subjecting him to an SS investigation before intervention by Himmler cleared him.

Image source: Deutsche Physik

Targeted by Nazi attacks on 'Jewish physics'

Joins German uranium research program

Sep 1939 - May 1945

Shortly after the outbreak of World War II, Heisenberg joined the Army Weapons Bureau's Uranium Club, the German effort to investigate nuclear fission for energy and potential weapons applications, becoming its leading theoretical physicist.

Image source: German nuclear program during World War II

Visits Niels Bohr in occupied Copenhagen

Sep 1941

Heisenberg traveled to German-occupied Copenhagen to meet with Niels Bohr. The content and purpose of their private conversation remain controversial, inspiring Michael Frayn's play Copenhagen and debate over whether Heisenberg sought warnings, collaboration, or moral guidance.

Leads reactor experiments in Haigerloch

1943 - Apr 1945

As Allied bombing disrupted Berlin research, Heisenberg's group moved its experimental reactor work to a rock cellar in Haigerloch, constructing a subcritical pile of uranium cubes and heavy water shortly before the war's end.

Image source: Haigerloch

Detained by Alsos Mission at Farm Hall

May 1945

British and American intelligence captured Heisenberg and nine other German scientists as part of Operation Alsos, interning them at Farm Hall near Cambridge, England, where secret recordings revealed their reactions to the atomic bombings of Hiroshima and Nagasaki.

Image source: Operation Epsilon

Reacts to Hiroshima bombing at Farm Hall

Aug 6, 1945

Upon hearing of Hiroshima, the interned scientists, including Heisenberg, were stunned by the success of the American bomb; secretly recorded transcripts showed Heisenberg initially doubting reports before analyzing how it must have been achieved.

Released from Farm Hall internment

Jan 1946

After months of internment in England, Heisenberg and his colleagues were released and returned to Germany, where he soon resumed scientific leadership roles in the rebuilding of German physics.

Postwar Career

Appointed director of Max Planck Institute for Physics in Göttingen

1946

Heisenberg became director of the reconstituted Kaiser Wilhelm Institute for Physics, renamed the Max Planck Institute for Physics, based first in Göttingen and helping restore West German physics to international standing.

Image source: Max Planck Institute for Physics

Proposes the unified field theory ('world formula')

1950 - 1958

Heisenberg devoted much of his later research to a nonlinear unified field theory intended to describe all fundamental particles, presenting it publicly in 1958. Though ultimately unsuccessful, the program influenced subsequent work on high-energy particle theory.

Image source: History of quantum field theory

Becomes president of Alexander von Humboldt Foundation

1953 - 1975

Heisenberg served as president of the Alexander von Humboldt Foundation for over two decades, fostering international scientific exchange and supporting foreign researchers working in Germany.

Image source: Alexander von Humboldt Foundation

Signs the Göttingen Manifesto against nuclear weapons

Apr 12, 1957

Heisenberg joined seventeen other prominent German scientists in signing the Göttingen Declaration, warning the West German government against acquiring nuclear weapons and calling on the public to oppose such plans.

Moves institute to Munich

1958

The Max Planck Institute for Physics relocated from Göttingen to Munich, where Heisenberg continued as director until his retirement, supported the construction of new research facilities, and advocated for a large-scale accelerator project.

Publishes memoir 'Physics and Beyond'

1969

Heisenberg released his autobiographical book 'Der Teil und das Ganze' ('Physics and Beyond'), recounting his conversations with colleagues like Bohr, Pauli, and Einstein and reflecting on the history of quantum mechanics and the ethics of science.

Dies of cancer in Munich

Feb 1, 1976

Werner Heisenberg died at his home in Munich after battling cancer, leaving behind a legacy as a principal architect of quantum mechanics and one of the defining physicists of the twentieth century.

Key Facts

Werner Heisenberg was born on December 5, 1901, in Würzburg, Germany, and died on February 1, 1976, in Munich.
In 1925, he developed matrix mechanics, the first complete formulation of quantum mechanics.
He formulated the uncertainty principle in 1927, which states that the position and momentum of a particle cannot both be known with perfect precision simultaneously.
He was awarded the Nobel Prize in Physics in 1932 for the creation of quantum mechanics.
During World War II, he led the German nuclear weapons research program known as the Uranium Club.

Source

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