George Paget Thomson (1892–1975) was a British physicist known for his significant contributions to the understanding of electron diffraction and wave-particle duality. He was the son of the prominent physicist J.J. Thomson, who is famous for the discovery of the electron.
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George Paget Thomson demonstrated wave behavior of electrons by passing an electron beam through thin material and recording diffraction patterns. Many crystal orientations in a thin polycrystalline film produce rings, whose geometry can be compared with the wavelength associated with the electron momentum. The experiment connects a photographic pattern with the de Broglie wavelength, making electron interference observable at energies and in a geometry different from a reflected crystal beam.[ref]
Electronic Waves by George Paget Thomson. Nobel lecture, transmission diffraction and electron-wave interpretation
Physics.[ref]
https://archives.trin.cam.ac.uk/index.php/catalogue-of-the-papers-and-correspondence-of-sir-george-paget-thomson-frs-1892-1975. Independent professional profile
Portrait of George Paget Thomson
. Nobel Foundation; individual photographer unidentified. Commons PD-Sweden claim plus US URAA/formalities claim; its PD-URAA tag is flagged as needing updating., via Wikimedia Commons. Source.