French noble family, descended from a Piedmontese family of the 17th century, that produced many high-ranking soldiers, politicians, and diplomats. Prominent members included François-Marie, 1st duke de Broglie (1671-1745), general and marshal of France; Victor-François, 2nd duke de Broglie (1718-1814), a soldier and marshal of France; Victor, 3rd duke de Broglie (1785-1870), a prime minister who campaigned against reactionary forces; and Albert, 4th duke de Broglie (1821-1901), who served as premier in the early years of the French Third Republic. The family also included the physicist Louis-Victor, 7th duke de Broglie
the wavelength, λ=h/p, associated with a beam of particles of momentum p. (h being Planck's constant.) The same formula gives the momentum of a photon or wavelength λ
born Aug. 15, 1892, Dieppe, France died March 19, 1987, Paris French physicist. A descendant of the de Broglie family of diplomats and politicians, he was inspired to study atomic physics by the work of Max Planck and Albert Einstein. In his doctoral thesis he described his theory of electron waves, then extended the wave-particle duality theory of light to matter. He is noted both for his discovery of the wave nature of electrons and for his research on quantum theory. Einstein built on de Broglie's idea of "matter-waves"; based on this work, Erwin Schrödinger constructed the system of wave mechanics. De Broglie remained at the Sorbonne after 1924 and taught theoretical physics at the Henri Poincaré Institute (1928-62). He was awarded a Nobel Prize for Physics in 1929 and UNESCO's Kalinga Prize in 1952
born Aug. 15, 1892, Dieppe, France died March 19, 1987, Paris French physicist. A descendant of the de Broglie family of diplomats and politicians, he was inspired to study atomic physics by the work of Max Planck and Albert Einstein. In his doctoral thesis he described his theory of electron waves, then extended the wave-particle duality theory of light to matter. He is noted both for his discovery of the wave nature of electrons and for his research on quantum theory. Einstein built on de Broglie's idea of "matter-waves"; based on this work, Erwin Schrödinger constructed the system of wave mechanics. De Broglie remained at the Sorbonne after 1924 and taught theoretical physics at the Henri Poincaré Institute (1928-62). He was awarded a Nobel Prize for Physics in 1929 and UNESCO's Kalinga Prize in 1952