1892 - 1987 (94 years)
Has more than 100 ancestors but no descendants in this family tree.
||Louis Victor Pierre Raymond de Broglie |
||15 Aug 1892
||Dieppe, Normandie, France
||19 Mar 1987
||This person is also Louis de Broglie at Wikipedia |
||3 Oct 2006 |
||Duc Louis Alphonse Victor de Broglie, b. 30 Oct 1846, Rome , d. 26 Aug 1906, Broglie (Age 59 years) |
||Pauline de la Forest d' Armaillé, b. 22 Dec 1851, Paris, Île-de-France, Fr , d. 26 Jun 1928, Paris, Île-de-France, Fr (Age 76 years) |
||26 Sep 1871
||Paris, Île-de-France, Fr
||4 siblings |
||Group Sheet | Family Chart
- 7th duc de Broglie
French theoretical physicist. He established that all subatomic particles can be described either by particle equations or by wave equations, thus laying the foundations of wave mechanics. He was awarded the Nobel Prize for Physics in 1929 for his discovery of the wavelike nature of electrons. Succeeded as Duke in 1960.
De Broglie's discovery of wave-particle duality enabled physicists to view Einstein's conviction that matter and energy are interconvertible as being fundamental to the structure of matter. The study of matter waves led not only to a much deeper understanding of the nature of the atom but also to explanations of chemical bonds and the practical application of electron waves in electron microscopes
He had originally intended a career as a humanist , and received his first degree in history . Afterwards, though, he turned his attention-probably under his brother's influence-toward mathematics and physics. With the outbreak of the First World War in 1914 , he offered his services to the army in the development of radio communications.
Unlike his brother Maurice, who was primarily an experimental physicist, Louis de Broglie had the mind of a theoretician rather than that of an experimenter or engineer. His 1924 doctoral thesis, Recherches sur la théorie des quanta (Research on Quantum Theory), introduced his theory of electron waves. This included the wave-particle duality theory of matter, based on the work of Einstein and Planck . This research culminated in the de Broglie hypothesis stating that any moving particle or object had an associated wave. Louis de Broglie thus created a new field in physics, the mécanique ondulatoire, or wave mechanics, uniting the physics of light and matter. For this he won the Nobel Prize in Physics in 1929 . Among the applications of this work has been the development of electron microscopes to get much better image resolution than optical ones, because of shorter wavelengths of electrons compared with photons .
In his later career, Louis de Broglie worked to develop a causal explanation of wave mechanics, in opposition to the wholly probabilistic models which dominate quantum mechanical theory. Today, this explanation is known as the de Broglie-Bohm theory , since it was refined by David Bohm in the 1950s.
From 1924, De Broglie taught theoretical physics in the University of Paris and from 1932, he occupied the chair in that subject for 30 years.
In addition to strictly scientific work, Louis de Broglie thought and wrote about the philosophy of science , including the value of modern scientific discoveries.
Louis de Broglie became a member of the Académie des sciences in 1933 , and was the academy's perpetual secretary from 1942 . On 12 October 1944 , he was elected to the Académie française , replacing mathematician Picard . Because of the deaths and imprisonments of Académie members during the occupation and other effects of the war, the Académie was unable to meet the quorum of twenty members for his election; due to the exceptional circumstances, however, his unanimous election by the seventeen members present was accepted. In an event unique in the history of the Académie, he was received as a member by his own brother Maurice, who had been elected in 1934 . UNESCO awarded him the first Kalinga Prize in 1952 for his work in popularizing scientific knowledge, and he was elected a Fellow of the Royal Society of London on 23 April 1953 . In 1961 he received the title of Knight of the Grand Cross in the Légion d'honneur . De Broglie was awarded a post as counselor to the French High Commission of Atomic Energy in 1945 for his efforts to bring industry and science closer together. He established a center for applied mechanics at the Henri Poincare Institute, where research into optics, cybernetics, and atomic energy were caried out.