Louis de Broglie

Louis de Broglie
De Broglie in 1929
Born
Louis Victor Pierre Raymond

(1892-08-15)15 August 1892
Died19 March 1987(1987-03-19) (aged 94)
Louveciennes, Île-de-France, France
Alma materUniversity of Paris (PhD)
Known for
  • Postulating matter waves (1924)
  • Presenting the pilot wave theory (1927)
FatherVictor de Broglie
RelativesMaurice de Broglie (brother)
FamilyBroglie
Awards
Scientific career
FieldsQuantum physics
Institutions
  • University of Paris
    • Institut Henri Poincaré
ThesisRecherches sur la théorie des quanta (1924)
Doctoral students
  • Alexandru Proca (1933)[1]
  • Satosi Watanabe (1935)[1]
  • Marie-Antoinette Tonnelat (1941)[1]
  • Olivier Costa de Beauregard (1943)[1]
  • Nicolás Cabrera (1944)[1]
  • Cécile DeWitt-Morette (1947)[1]
  • Bernard d'Espagnat (1950)[1]

Louis Victor Pierre Raymond, 7th Duc de Broglie (French: [də bʁɔj] ;[2] 15 August 1892 – 19 March 1987)[3] was a French theoretical physicist and aristocrat known for his contributions to quantum theory. In his 1924 PhD thesis, he postulated the wave nature of electrons and suggested that all matter has wave properties. This concept is known as the de Broglie hypothesis, an example of wave-particle duality, and forms a central part of the theory of quantum mechanics. De Broglie won the Nobel Prize in Physics in 1929, after the wave-like behaviour of matter was first experimentally demonstrated in 1927.[4][5]

The wave-like behaviour of particles theorized by de Broglie was used by Erwin Schrödinger in his formulation of wave mechanics.[6]: 270  De Broglie presented an alternative interpretation of these mechanics called the pilot-wave concept at the 1927 Solvay Conferences, but then abandoned it. In 1952, David Bohm developed a new form of the concept which became known as the de Broglie–Bohm theory. De Broglie revisited the idea in 1956, creating another version that incorporated ideas from Bohm and Jean-Pierre Vigier.[7]

Louis de Broglie was the sixteenth member elected to occupy seat 1 of the Académie française in 1944, and served as Perpetual Secretary of the French Academy of Sciences.[8][9] De Broglie became the first high-level scientist to call for establishment of a multi-national laboratory, a proposal that led to the establishment of the European Organization for Nuclear Research (CERN).[10] Among his publications were The Revolution in Physics and Matter and Light. He was honorary president of the French Association of Science Writers and received the inaugural Kalinga Prize from UNESCO for his efforts to popularize science.[11][12]

  1. ^ a b c d e f g "Louis de Broglie - The Mathematics Genealogy Project". genealogy.math.ndsu.nodak.edu. Retrieved 2 June 2025.
  2. ^ The interviewer pronounces de Broglie's name before asking questions of the scientist. Nomen Nominandum (28 January 2016). Interview with Louis de Broglie, 1967 (French with English Subtitles). Retrieved 18 September 2025 – via YouTube.
  3. ^ Cite error: The named reference louveciennes was invoked but never defined (see the help page).
  4. ^ "The Nobel Prize in Physics 1929". The Nobel Foundation.
  5. ^ Ennis, Thomas W. (20 March 1987). "LOUIS DE BROGLIE, FRENCH PHYSICIST, WON '29 NOBEL PRIZE FOR WAVE THEORY". The New York Times.
  6. ^ Whittaker, Edmund T. (1989). A history of the theories of aether & electricity. 2: The modern theories, 1900 - 1926 (Repr ed.). New York: Dover Publ. ISBN 978-0-486-26126-3.
  7. ^ Cite error: The named reference Bridgman-1960 was invoked but never defined (see the help page).
  8. ^ O'Connor, John J.; Robertson, Edmund F., "Louis de Broglie", MacTutor History of Mathematics Archive, University of St Andrews
  9. ^ "History of International Academy of Quantum Molecular Science". IAQMS. Retrieved 8 March 2010.
  10. ^ "Louis de Broglie". Soylent Communications. Retrieved 12 June 2015.
  11. ^ "Louis de Broglie - Biographical". The Nobel Foundation.
  12. ^ "NOTES ON SCIENCE: First Award of Kalinga Prize -- Best Light for Eyes". The New York Times. 15 June 1952.