Louis de Broglie proposed associating a wave with material particles, relating its wavelength to the particle momentum by . This connects a particle quantity with an experimentally testable wave scale: increasing the momentum decreases the expected diffraction wavelength. His account of matter waves helped motivate a description in which standing-wave conditions select allowed atomic motions, and his Nobel lecture discusses the relation between this proposal and later electron-diffraction experiments.[ref]
The Wave Nature of the Electron by Louis de Broglie. 1929 Nobel lecture, matter-wave wavelength and electron diffraction
Theoretical physics.[ref]
https://archives.collections.ed.ac.uk/repositories/2/archival_objects/237297. Independent professional profile
Portrait of Louis de Broglie
. Agence Rol; Bibliothèque nationale de France, département Estampes et photographie, EI-13 (1675), Rol 142233. Commons records public-domain status in France for this historical agency photograph and in the United States for pre-1931 publication; mechanical scan marked PD-scan. Other jurisdictions may differ., via Wikimedia Commons. Source. Articles by others on the same topic
Louis de Broglie was a French physicist who is best known for his groundbreaking contributions to quantum theory. Born on August 15, 1892, he introduced the concept of wave-particle duality, which suggests that particles such as electrons exhibit both wave-like and particle-like properties.
