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Portrait of Wolfgang Pauli
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Nobel Prize in Physics · 1945

Wolfgang Pauli

His exclusion principle helps explain why atoms have shells, chemistry works and matter holds its shape; he also predicted the neutrino.

The Nobel citation: “for the discovery of the Exclusion Principle, also called the Pauli Principle”
Born
April 25, 1900, Vienna, Austria
Died
December 15, 1958, Zurich, Switzerland
Affiliation at the time
Princeton University, USA

Physics prize

1945

Awarded alone.

Age that year

45years

Born in 1900.

Headline credited impact

$142–160billion in economic value

Cumulative world semiconductor sales, a proxy for the quantum-based electronics economy. How it was built

Sources cited

26

Fact-checked September 24, 2026.

  • As a student he wrote a 237-page review of relativity theory, published in 1921. Einstein wrote that readers might not believe its author was only 21.
  • Einstein nominated him for the 1945 Nobel Prize and, at a celebration in Princeton, called Pauli his intellectual successor.
  • In 1930 he proposed the neutrino, a ghostly particle he feared could never be detected. It was found in 1956, two years before his death.
  • Switzerland refused him citizenship twice; in 1940 a police chief ruled him not assimilated enough. His German passport classed him as 75% Jewish.
  • In 1916, at about 16, he learned from his visiting grandmother that the family name had been Pascheles and that his father was born Jewish.

The breakthrough

The exclusion principle (1925)

By the early 1920s physicists described each electron in an atom with a few whole numbers, called quantum numbers, that fix its energy and motion. But nobody could say why all the electrons do not crowd into the lowest-energy orbit, or why the periods of the periodic table come in lengths of 2, 8, 18 and 32 elements. Working in Hamburg, Pauli found the missing rule and published it in 1925. First, each electron needs four quantum numbers, not three. The fourth was a strange two-valued property with no counterpart in everyday physics; later that year other physicists pictured it as the electron spinning like a top, pointing either up or down. Second, no two electrons in an atom can share the same set of four numbers. Think of a theater where every seat has its own row-and-seat number and each seat holds one person. When the front rows are full, latecomers must sit farther back. In the same way, once an atom's inner shells are full, extra electrons must go into outer shells, and those outer electrons decide how an element behaves in chemistry. The rule turned out to hold for protons and neutrons too. Pauli could not at first say why nature obeys it. In 1940, following work with Markus Fierz and combining relativity with quantum field theory, he proved a link between a particle's spin and whether it obeys the rule, a result now called the spin-statistics theorem.[1],[2],[3],[4],[12],[21],[22]

“I was unable to give a logical reason for the exclusion principle or to deduce it from more general assumptions.”
Wolfgang Pauli, Nobel Lecture, Stockholm, 13 December 1946, recalling his original 1925 paper and his lasting dissatisfaction that the principle could not be derived from deeper laws.[3]

What it meant for humanity

The exclusion principle is one of the rules that make the material world possible. Because electrons must stack into shells instead of piling into the lowest orbit, atoms have size and structure, and each element has its own chemistry. The Nobel presentation speech called the principle essential for explaining the physical and chemical properties of the elements, and indispensable for understanding the electrical conductivity of metals and magnetism. It also helps explain why solid matter does not collapse: when Freeman Dyson and Andrew Lenard proved in 1967 that ordinary bulk matter is stable, the exclusion principle for electrons was essential to their proof. The same effect, known as degeneracy pressure, helps hold up white dwarf and neutron stars against their own gravity. In 1927 Pauli applied the new quantum statistics of Fermi and Dirac to electrons in metals, one of the first steps toward the quantum theory of solids. Through the band theory of the early 1930s, that theory explains why some materials conduct, some insulate and some are semiconductors, the physics beneath every transistor and computer chip. In 1930 he proposed the neutrino to save the law of energy conservation. Enrico Fermi built his theory of the weak force on it, Frederick Reines and Clyde Cowan detected it in 1956, and physicists now build huge detectors to catch neutrinos from the Sun and exploding stars. Pauli also helped lay the foundations of quantum field theory. Known as the conscience of physics for his exacting criticism, he made ETH Zurich a leading center of theoretical physics, drew young physicists there from around the world and took part in the preparatory meetings that led to CERN.

  • The Nobel presentation speech called the exclusion principle essential for explaining the elements' physical and chemical properties, and indispensable for understanding metals' conductivity and magnetism.[4]
  • The principle also governs protons and neutrons, which makes it essential for describing atomic nuclei.[1],[4]
  • Freeman Dyson and Andrew Lenard's 1967 proof that ordinary matter in bulk is stable depends essentially on the exclusion principle for electrons.[23]
  • His 1927 theory of magnetism in metals was one of the first uses of Fermi-Dirac statistics for electrons in solids, a step toward the band theory that explains metals, insulators and semiconductors.[22]
  • His 1930 neutrino proposal underpinned Fermi's theory of the weak force; Reines and Cowan detected the particle in 1956, work that earned Reines a share of the 1995 Nobel Prize in Physics.[6],[8]

Impact in numbers

Most of Pauli's legacy is the kind numbers cannot capture. The exclusion principle is part of the explanation for the periodic table, chemistry, the stability of solid matter and the structure of white dwarf and neutron stars, and his neutrino opened a field of physics that now studies the Sun and exploding stars. None of this has a credible price tag. We record one small ripple claim. Modern electronics rests on the quantum theory of solids, in which the exclusion principle governs how electrons fill energy bands, and Pauli's 1927 theory of electrons in metals was an early step toward it. We use cumulative world semiconductor sales as a conservative proxy for that economy, the same whole-outcome range used for Niels Bohr and Albert Einstein, and credit Pauli 1% of it, a judgment call shared with the many other founders of quantum physics. We attribute no weapons harm to him: he did no weapons work, and the link from his principle to the bomb is indirect.

Fundamental scienceTechnologyEconomy

Each number is the laureate’s credited share of a real-world outcome, cumulative to 2025. The whole outcome, the share of credit, and the reasoning are shown so you can check the arithmetic. Outcomes shared with other laureates are counted once on the impact page.

  • Low confidenceRippleModeledEconomy

    Cumulative world semiconductor sales, a proxy for the quantum-based electronics economy

    $142–160

    billion in economic value, credited share

    That is 1% of $14.2–16 trillion in economic value since 1955.

    How this number was built

    Same whole-outcome range as the Niels Bohr and Albert Einstein profiles. WSTS worldwide semiconductor billings for 1986-2025 sum to about $10.3 trillion nominal, about $14.2 trillion in 2024 dollars after CPI conversion (low). High ($16T): $14.2T + rough, unsourced allowances of ~$0.5T for pre-1986 chip sales and ~$1T for lasers and other quantum devices outside WSTS = ~$15.7T, rounded up. Sales are only a proxy for value. NIST notes that quantum science underpins lasers and transistors. Share 0.01: electrons fill a solid's energy bands one state at a time because of the exclusion principle, and Pauli's 1927 paper was an early use of Fermi-Dirac statistics for electrons in metals. But quantum theory had many authors (Planck, Einstein, Bohr, Heisenberg, Schrödinger, Dirac, Fermi, Bloch and others), and materials science and engineering were equally essential.[22],[24],[25],[26]

    Sources: arXiv (arXiv:1402.3370); National Institute of Standards and Technology (Taking Measure blog); World Semiconductor Trade Statistics (WSTS); Federal Reserve Bank of Minneapolis

The double edge

No direct harms are documented from Pauli's work. The exclusion principle governs atomic nuclei as well as atoms, so like the rest of quantum physics it lies in the background of nuclear technology, but Pauli did no weapons work. During World War II he did pure research at Princeton while most of his well-known colleagues worked on the atomic bomb (as a foreign national he could not have gone to Los Alamos), and after the war he turned down American posts, apparently in part because he disapproved of the military's growing influence over US physics. The controversies are personal. In 1925 he ridiculed Ralph Kronig's idea that the electron spins, and Kronig did not publish it; the Leiden students George Uhlenbeck and Samuel Goudsmit put forward the same idea that October. Pauli later admitted that he had strongly doubted spin at first. His criticism of colleagues' work could be harsh and abrasive.

  • Minor

    He ridiculed the idea of electron spin

    Months before Uhlenbeck and Goudsmit, the young Columbia-trained physicist Ralph Kronig came up with the idea of electron spin and showed it to Pauli, who ridiculed it as clever but unrelated to reality. Kronig did not publish. In his Nobel lecture Pauli acknowledged that he had at first strongly doubted the spin idea.[3],[21]

  • Minor

    A feared critic

    Pauli's colleagues valued and feared his criticism, and the Encyclopaedia Judaica notes that he could be abrasive in scientific debate and was a difficult teacher to follow.[14],[15]

Against the odds

Pauli grew up Catholic in a family that had set its Jewish identity aside. His father, born into the Jewish Pascheles family of Prague, changed the family name and converted before Wolfgang was born, and Wolfgang was told of his Jewish roots in 1916, when he was about 16. His early career moved fast: after Munich, Göttingen, Copenhagen and Hamburg, he became a professor at ETH Zurich in 1928. Then Nazi Germany annexed Austria in March 1938. The Germans quickly extended anti-Jewish laws to Austria, and by December 1939 its Jewish population had fallen from about 192,000 to 57,000, mostly through emigration. The annexation made Pauli, an Austrian living in Switzerland, a German national, and his German passport classed him as 75% Jewish. His father's life in Vienna became intolerable, and friends at ETH helped him escape to Switzerland. His sister Hertha, a writer, fled to Paris in 1938 and in 1940 escaped occupied France for the United States. Switzerland rejected Pauli's applications for citizenship in 1938 and 1940. The second time, police chief Heinrich Rothmund, whose division was charged with fighting the so-called Judaization of Switzerland, said Pauli was not sufficiently assimilated. Had Germany occupied Switzerland, German law would have treated him as a Jew. In 1940 he left for Princeton, and ETH threatened to end his employment. He returned to his chair in 1946 and finally became Swiss in 1949.

  • 1938

    Persecution

    Germany's annexation of Austria made Pauli a German national. His German passport classed him as 75% Jewish, and if Germany had occupied Switzerland, German law would have treated him as a Jew.[11],[15]

  • 1938

    Persecution

    After the annexation his father's situation in Vienna became intolerable, and friends at ETH helped him escape to Switzerland. His sister Hertha, whose novel the Nazis had blacklisted, fled to Paris in 1938 and escaped occupied France for the United States in 1940.[11],[19],[20]

  • 1940

    Discrimination

    Swiss authorities rejected his naturalization in 1938 and again after the war began. Police chief Heinrich Rothmund, whose division was charged with fighting the so-called Judaization of Switzerland, ruled that he did not meet the requirement of assimilation.[9],[11],[18]

  • 1940

    Exile

    Fearing a German invasion of Switzerland, he left Europe for Princeton in July 1940. As a national of a country at war he could not return during the war, and ETH threatened to terminate his employment.[8],[11],[15]

Jewish background

Jewish fatherDistant from Jewish identity

Pauli's father, the physician and chemist Wolfgang Joseph Pauli, was born in Prague into a respected Jewish family named Pascheles; in 1898 he changed the name to Pauli and in 1899 became a Roman Catholic. Pauli's maternal grandfather, the writer Friedrich Schütz, was also Jewish, so he had three Jewish grandparents, and his German passport later classed him as 75% Jewish. Baptized Catholic, he learned of his Jewish ancestry at about 16 and left the Catholic Church in 1929. He never practised Judaism, but in later life, according to the Encyclopaedia Judaica, he drew on Jewish mysticism in his own mystical philosophy.[7],[10],[15],[16]

Key dates

  1. April 25, 1900

    Born in Vienna to Bertha Schütz, a journalist, and Wolfgang Joseph Pauli, a physician and chemist from a Jewish Prague family; baptized Catholic with Ernst Mach as godfather.[1],[7],[9],[10]

  2. 1916

    Learns, at about 16, that the family name was once Pascheles and that his father was born Jewish.[16]

  3. 1921

    Earns his doctorate under Arnold Sommerfeld in Munich; his 237-page review of relativity, written as a student, wins Einstein's praise.[2],[7]

  4. 1922

    After assisting Max Born in Göttingen, spends a year with Niels Bohr in Copenhagen, working on how magnetic fields split atomic spectral lines.[2],[3]

  5. 1925

    Publishes the exclusion principle while a lecturer at the University of Hamburg.[1],[2],[3]

  6. 1928

    Becomes professor of theoretical physics at ETH Zurich, his academic home for the rest of his life.[2],[8]

  7. December 4, 1930

    In a letter to colleagues meeting in Tübingen, proposes a new neutral particle, later named the neutrino, to rescue energy conservation in radioactive decay.[6],[7],[8]

  8. 1938

    Nazi Germany annexes Austria and extends its anti-Jewish laws there, making him a German national; his first application for Swiss citizenship is rejected.[9],[11],[17]

  9. July 1940

    After a second rejection, leaves Zurich for the Institute for Advanced Study in Princeton, where he completes his work linking spin and statistics.[8],[11],[12]

  10. November 1945

    Awarded the Nobel Prize in Physics, with Einstein among his nominators; unable to go to Stockholm, he is honored at Princeton, where Einstein calls him his intellectual successor.[1],[4],[5],[8],[13]

  11. 1946

    Becomes a US citizen, returns to his chair in Zurich, and gives his Nobel lecture in Stockholm on 13 December.[3],[8],[9]

  12. 1949

    Granted Swiss citizenship.[9],[14]

  13. 1956

    Frederick Reines and Clyde Cowan detect the neutrino he had predicted 26 years earlier.[6],[8]

  14. December 15, 1958

    Dies in Zurich at age 58.[1],[8]

Sources

  1. 1.Wolfgang Pauli - Facts · NobelPrize.org (Nobel Prize Outreach)
  2. 2.Wolfgang Pauli - Biographical · NobelPrize.org (from Nobel Lectures, Physics 1942-1962, Elsevier, 1964), 1964
  3. 3.Exclusion principle and quantum mechanics (Nobel Lecture, 13 December 1946), by Wolfgang Pauli · NobelPrize.org, 1946
  4. 4.The Nobel Prize in Physics 1945 - Award ceremony speech by Professor I. Waller · NobelPrize.org, 1945
  5. 5.Wolfgang Pauli - Nominations · NobelPrize.org
  6. 6.Press release: The 1995 Nobel Prize in Physics (Martin L. Perl and Frederick Reines) · NobelPrize.org (Royal Swedish Academy of Sciences), 1995
  7. 7.Wolfgang Ernst Pauli, by J J O'Connor and E F Robertson · MacTutor History of Mathematics, University of St Andrews, 2003
  8. 8.Wolfgang Pauli (1900 - 1958) biography · CERN Archives, Scientific Information Service
  9. 9.Wolfgang Pauli (1900-1958) (short portrait) · ETH Library, ETH Zurich
  10. 10.Birth and childhood in Vienna (virtual exhibition: Wolfgang Pauli and modern physics) · ETH Library, ETH Zurich, 2000
  11. 11.Failed naturalisation and departure to the United States (virtual exhibition: Wolfgang Pauli and modern physics) · ETH Library, ETH Zurich, 2000
  12. 12.Princeton (virtual exhibition: Wolfgang Pauli and modern physics) · ETH Library, ETH Zurich, 2000
  13. 13.Nobel Prize for Physics 1945 (virtual exhibition: Wolfgang Pauli and modern physics) · ETH Library, ETH Zurich, 2000
  14. 14.Second Zurich period (virtual exhibition: Wolfgang Pauli and modern physics) · ETH Library, ETH Zurich, 2000
  15. 15.Wolfgang Pauli (Complete Dictionary of Scientific Biography entry by Markus Fierz; Encyclopaedia Judaica entry by Michael Denman; and other reference entries) · Encyclopedia.com
  16. 16.Wolfgang Pauli 1900 to 1930: His Early Physics in Jungian Perspective (PhD dissertation, University of Minnesota), by John Richard Gustafson · arXiv (arXiv:1003.3223), 2004
  17. 17.Austria · United States Holocaust Memorial Museum, Holocaust Encyclopedia
  18. 18.Switzerland and the Refugees Fleeing Nazism: Documents on the German Jews Turned Back at the Basel Border in 1938-1939 · Yad Vashem
  19. 19.A bridge across the rupture of time... Herta Pauli (1906-1973): Journalist, actress and children's author (project description) · National Fund of the Republic of Austria for Victims of National Socialism
  20. 20.Hertha Pauli's "Journal of an Escape" from France · We Refugees Archive
  21. 21.Discovery of electron spin · Instituut-Lorentz, Leiden University
  22. 22.Fermi-Dirac Statistics, by Shyamal Biswas (University of Hyderabad) · arXiv (arXiv:1402.3370), 2015
  23. 23.The Role of the Exclusion Principle for Atoms to Stars: A Historical Account, by Norbert Straumann (University of Zurich) · arXiv (arXiv:quant-ph/0403199), 2004
  24. 24.A Quantum Leap Forward: How Tiny Particles Can Bring Us Exciting New Tech, by Corey Stambaugh · National Institute of Standards and Technology (Taking Measure blog), 2025
  25. 25.Historical Billings Report (WSTS Blue Book monthly data, 1986 to date) · World Semiconductor Trade Statistics (WSTS), 2026
  26. 26.Consumer Price Index, 1913- · Federal Reserve Bank of Minneapolis

Fact-checked on September 24, 2026 by a separate AI fact-checking pass that re-opened the sources, with 9 corrections made. How we check

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