Rice, Richard E. "de Broglie, Louis Radiant energy or light had been demonstrated to exhibit properties associated with particles as well as their well-documented wave-like characteristics. A versatile scientist trained in medicine and chemistry, Guettard gradually acquired knowledge of the various branc…, Joliot, Fréd Paris: Albin Michel, 1960. (January 12, 2021). ———. Son représentant le plus illustre est Louis-Victor de Broglie (1892-1987), 7 ème duc de Broglie, fils du 5 ème duc de Broglie et frère du sixième, physicien, mondialement connu pour son prix Nobel de physique , mais aussi secrétaire permanent de l’Académie des sciences et membre de l’Académie française (1944). “Strangeness and Soundness in Louis de Broglie’s Early Works.” Physis 30 (1993): 303–372. (January 12, 2021). The following year American physicists Charles J. Davisson and Lester H. Germer and others demonstrated experimentally that electrons can be diffracted just like light. He obtained the chair of physical theories at the Paris Faculty of Sciences in 1933 and taught there until his retirement in 1962. With the brothers Maurice and especially Louis, it added to its famous representatives (among them three state marshals) two world-rank physicists of the twentieth century. In 1956 he received the gold medal of the Centre National de la Recherche Scientifique (CNRS) and in 1961 he was decorated with the Grand Cross of the Légion d’Honneur (1961). His work in his brother’s laboratory was instrumental in providing him with firsthand knowledge of some aspects of the new phenomenology, essentially those related to the study of x-ray absorption and of the x-ray-induced photo-electric effect. Variantes du nom de famille. In 1920 de Broglie returned to his studies; later he stated that his attraction "to theoretical physics was…the mystery in which the structure of matter and of radiation was becoming more and more enveloped as the strange concept of the quantum, introduced by Max Planck in 1900 in his researches into black-body radiation, daily penetrated further into the whole of physics" (quoted by Heathcote, pp. Early Life. Une tentative d’interprétation causale et non linéaire de la mécanique ondulatoire: la théorie de la double solution. This fact was exploited in the 1930s in the development of the electron microscope . Although, according to de Broglie, all objects have "matter waves," these waves are so small in relation to large objects that their effects are not observable and no departure from classical physics is detected. Abragam, Anatole. Entitled "Investigations into the Quantum Theory," it consolidated three shorter papers he had published the previous year. These properties later found practical applications in the development of magnetic lenses, the basis for the electron microscope. "Broglie, Louis (Victor Pierre Raymond) De Paris: Flammarion, 1992. Amsterdam and New York: Elsevier, 1960. In 1929 the Swedish Academy of Sciences conferred on him the Nobel Prize for Physics “for his discovery of the wave nature of electrons.”. . Louis Victor De-Broglie 1. “Aristocratic Culture and the Pursuit of Science: The de Broglies in Modern France.” Isis 88 (1997): 397–421. As is known, these ideas did not really express a clear-cut ontological thesis; however, they definitely had an impact on Maurice’s younger brother. He was elected a member of the Académie Française in 1944, (one of the fellow academicians to greet his election was his brother Maurice, himself elected in 1934). ." After graduating from the Sorbonne in 1909 with baccalaureates in philosophy and mathematics, de Broglie entered the University of Paris. Pronunciation of Louis Victor de Broglie with 1 audio pronunciation, 3 synonyms, 5 translations and more for Louis Victor de Broglie. . That same year, he was elected to the Académie des Sciences, becoming its Life Secretary in 1942; he used his influence to urge the Académie to consider the harmful effects of nuclear explosions as well as to explore the philosophical implications of his and other modern theories. De Broglie's wave matter theory remained unproven until two separate experiments conclusively demonstrated the wave properties of electrons—their ability to diffract or bend, for example. His writings also include works on x rays, gamma rays, atomic particles, optics, and a history of the development of contemporary physics. Victor de Broglie . De Broglie was elected a member of the Academy of Sciences in 1933 (section des sciences mécaniques), and was elected its permanent secretary in 1942 (division des sciences mathématiques; he resigned this charge in 1975). Victor de Broglie (28 November 1785 – 25 January 1870) was Prime Minister of France from 12 March 1835 to 22 February 1836, succeeding Edouard Mortier and preceding Adolphe Thiers. - Se retira de la vie politique en 1851 pour se consacrer à l'étude des questions philosophiques et religieuses. . He served as honorary president of the French Association of Science Writers and, in 1952, was awarded first prize for excellence in science writing by the Kalinga Foundation. Louis-Victor de Broglie was the son of Victor, duc de Broglie, and Pauline d’Armaillé; he was the younger of two brothers in a family of five children. He served with his father, François-Marie, 1st duc de Broglie, at Parma and Guastalla, and in 1734 obtained a colonelcy. Most online reference entries and articles do not have page numbers. De Broglie graduated from the University of Paris in 1909. de Broglie (French də brɔj) n 1. botany, medicine. Born Aug. 15, 1892, in Dieppe. Dordrecht, Netherlands, and Boston: Kluwer, 1990. During his long career, de Broglie published over twenty books and numerous research papers. Victor de Broglie was born in Paris, France in 1785, the son of general Charles-Victor de Broglie. Certitudes et incertitudes de la science. De Broglie's work contributed to the fledgling science of microbiology in the mid-1920s, when he suggested that electrons, as well as other particles, should exhibit wave-like properties similar to light. Kubli, Fritz. Paris: 1953. Cite this article Pick a style below, and copy the text for your bibliography. A list of all his writings has been published in Annales de la Fondation Louis de Broglie 17 (1992): 1–21. Wave characteristics, however, are detectable only at the atomic level, whereas the classical, ballistic properties of matter are apparent at larger scales. Elu président de l'Assemblée nationale du 14 au 31 août 1791, il demanda, à la fin de la session, à reprendre du service actif, et fut envoyé comme maréchal de camp à l'armée du Rhin sous les ordres de Luckner. de Broglie (French də brɔj) n 1. World of Microbiology and Immunology. De Broglie accomplished his most important work in physics while still a young man, receiving the Nobel Prize in physics in 1929. “The Heritage of Louis de Broglie in the Works of Schrödinger and Other Theoreticians.” In La découverte des ondes de matière: colloque organisé à l’occasion du centenaire de la naissance de Louis de Broglie, 16–17 juin 1992, edited by Académie des sciences, 65–78. https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/broglie-louis-victor-pierre-raymond-de, https://www.encyclopedia.com/history/encyclopedias-almanacs-transcripts-and-maps/louis-de-broglie, https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/broglie-louis-victor-de-1892-1987, https://www.encyclopedia.com/science/news-wires-white-papers-and-books/de-broglie-louis, https://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/de-broglie-louis-victor, Fontenelle, Bernard Le Bouyer (or Bovier) De, Louise-Elisabeth de Bourbon Condé (1693–1775). ." Paris: Masson et Cie, 1924; also Annales de Physique 3 (1925): 22–128. Bristol, U.K.: Adam Hilger. Throughout his long life, de Broglie remained active in the development and interpretation of quantum mechanics and wrote more than twenty-five books on various topics related to this field of study. Although, according to de Broglie, all objects have "matter waves," these waves are so small in relation to large objects that their effects are not observable and no departure from classical physics is detected. 12 Jan. 2021 . The following article is from The Great Soviet Encyclopedia (1979). 1992, edited by Académie des sciences, 41–52. - ℹ - Biographie : Mathématicien, physicien et académicien français (1892-1987). Of importance to microscope design was the fact that the wavelength of electrons is typically much smaller than the wavelength of light. The outbreak of World War I marked a pause in Louis’s pursuit of strictly theoretical speculations. After graduating from the Sorbonne in 1909 with baccalaureates in philosophy and mathematics, de Broglie entered the University of Paris. ——. In his doctoral dissertation in 1924, Louis de Broglie developed the equation λ = h/mυ, which predicts that the wavelength λ of a particle is inversely proportional to its mass m and velocity υ where h is Planck's constant.✷ The wavelength associated with a submicroscopic object—an electron, for example—is large relative to the size of the object and is therefore significant in describing its behavior, whereas the wavelength associated with a macroscopic object—a basketball, for example—is negligibly small relative to its size, and therefore the wavelike behavior of such an object is unnoticeable. Fact 7 He became the 7th duc de Broglie upon the death without heir in 1960 of his older brother, Maurice, 6th duc de Broglie, also a physicist. His son died in 1960, and was succeeded by his brother Louis (who died in 1987). De Broglie devised a mathematical formula, the matter wave relation, to summarize his findings. New York: Basic Books, 1962. “Fifty Years of Matter Waves.” PhysicsToday 27 (1974): 38–45. Austrian physicist Erwin Schrödinger also grasped the implications of de Broglie's work and used it to develop his own theory of wave mechanics, which has since become the foundation of modern physics. The idea had great significance for the continued evolution of quantum mechanics. Sa mère, Sophie de Rauzan (1764-1828), incarcérée à Vesoul, peut s'évader grâce à l'aide d'un serviteur et passe en Suisse. “Why Was It Schrödinger Who Developed de Broglie’s Ideas?” Historical Studies in the Physical Sciences 1 (1969): 291–314. Bouguer, Pierre World Encyclopedia. - Se retira de la vie politique en 1851 pour se consacrer à l'étude des questions philosophiques et religieuses. ." "Broglie, Louis Victor De (1892-1987) Broglie, Louis (Victor Pierre Raymond) De Victor François de Broglie, 2nd duc de Broglie was a French aristocrat and soldier and a marshal of France. Langevin, the second son of Victor Langevin, a…, Bouguer, Pierre Paris: Lavoisier, 1994. Here he began his investigations into the nature of matter, inspired by a conundrum that had long been troubling the scientific community: the apparent physical irreconcilability of the experimentally proven dual nature of light. Encyclopedia of World Biography.

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