Louis Victor Pierre Raymond, 7th Duc de Broglie was a French theoretical physicist and aristocrat known for his contributions to quantum theory. In his 1924 Ph.D. 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. In 1929, de Broglie won the Nobel Prize in Physics, after the wave-like behaviour of matter was experimentally confirmed in 1927. This confirmation earned George Paget Thomson and Clinton Davisson the Nobel Prize in Physics in 1937. The Nobel Prize in Physics 1929, announced November 12, 1929. Louis de Broglie, “for his discovery of the wave nature of electrons”. Louis de Broglie: born 1892, Dieppe, France. Wiki link Data: the Nobel Foundation (CC0).