robert andrews millikan

NobelPrize.org. Robert Andrews Millikan was an eminent American experimental physicist who won the Nobel Prize for Physics in 1923 for his work on photoelectric effect. Credits: Wikipedia. Tras doctorarse en la Columbia University de Nueva York (1895), realizó estudios postdoctorales en las universidades de Berlín y Gotinga (1895-1896). Next, he verified experimentally Einstein’s all-important photoelectric equation, and made the first direct photoelectric determination of Planck’s constant h (1912-1915). Millikan's setup for the oil drop experiment Orginal Millikan’s oil-drop apparatus. During his undergraduate course at Oberlin College, his favorite subjects were Greek and mathematics; but after his graduation in 1891 he took, for two years, a teaching post in elementary physics. Thereafter, he did his bachelor’s in the Classics from Oberlin College. His grandparents were of the Old New England stock which had come to America before 1750, and were pioneer settlers in … Robert Andrews Millikan (March 22, 1868 – December 19, 1953) was an American experimental physicist, and Nobel laureate in physics for his measurement of the charge on the electron and for his work on the photoelectric effect. Millikan memenangkan Penghargaan Nobel dalam Fisika pada 1923 karena isolasi dan pengukuran muatan elektron. He obtained more precise results in 1910 with his famous oil-drop experiment in which he replaced water (which tended to evaporate too quickly) with oil. Robert A. Millikan (1868 –1953) was an American experimental physicist and Nobel laureate in physics for his measurement of the charge on the electron and for his work on the photoelectric effect. Hän osoitti, että kaikki varaukset ovat alkeisvarauksen monikertoja. Tasked with a mission to manage Alfred Nobel's fortune and has ultimate responsibility for fulfilling the intentions of Nobel's will. During 1920-1923, Millikan occupied himself with work concerning the hot-spark spectroscopy of the elements (which explored the region of the spectrum between the ultraviolet and X-radiation), thereby extending the ultraviolet spectrum downwards far beyond the then known limit. eds. Millikan was an eminent teacher, and passing through the customary grades he became professor at that university in 1910, a post which he retained till 1921. Omissions? From Wikimedia Commons, the free media repository. During his undergraduate course his favourite subjects were Greek and mathematics; but after his graduation in 1891 he took, for two years, a teaching post in elementary physics. Robert Andrews Millikan (1868-1953) Robert Millikan was an American physicist who was awarded the Nobel Prize for Physics for his experiments on the photoelectric effect … In 1916 he took up with similar skill the experimental verification of the equation introduced by Albert Einstein in 1905 to describe the photoelectric effect, in which electrons are ejected from a metal plate when light falls on it. Robert Andrews Millikan. Me EINSTEIN, Albert, Bertrand Russell, John Dewey, Robert Andrews Millikan, Theodore Dreiser, H.G. Get a Britannica Premium subscription and gain access to exclusive content. By comparing applied electric force with changes in the motion of the oil drops, he was able to determine the electric charge on each drop. He died on the 19th of December, 1953, in San Marino, California. In 1893, after obtaining his mastership in physics, he was appointed Fellow in Physics at Columbia University. The photoelectric effect had puzzled physicists, but Einstein described the energy of the ejected electron as equal to hf - φ, where h is Planck’s constant, f is the frequency of the light, and φ is a property of the metal called the work function. While every effort has been made to follow citation style rules, there may be some discrepancies. Robert Andrews Millikan was born on March 22, 1868, in Morrison, Illinois. On the instigation of his professors, Millikan spent a year (1895-1896) in Germany, at the Universities of Berlin and Göttingen. at the time of the award and first It was during this period that he developed his interest in the subject in which he was later to excel. The following article is from The Great Soviet Encyclopedia (1979). Millikan went to high school in Maquoketa, Iowa . During World War I, Millikan was Vice-Chairman of the National Research Council, playing a major part in developing anti-submarine and meteorological devices. Stratton (1898); Mechanics, Molecular Physics, and Heat (1902); The Theory of Optics,with C.R. Dr. Robert Andrews Millikan has been announced as the speaker for the Commencement exercises to be held on Friday, June 2, in the late afternoon, in the back of the Chem-istry Cecture Hall. Several outreach organisations and activities have been developed to inspire generations and disseminate knowledge about the Nobel Prize. Mills (1908); Practical Physics – revision of A First Course(1920); The Electron(1917; rev. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Robert Millikan's oil-drop experiment. MLA style: Robert A. Millikan – Biographical. Nobel Media AB 2021. This article about a physicist is a stub. Robert Andrews Millikan was an American experimental physicist honored with the Nobel Prize for Physics in 1923 for the measurement of the elementary electronic charge and for his work on the photoelectric effect. The American physicist Robert Andrews Millikan (1868-1953) measured the charge of the electron, proved the validity of Albert Einstein's photoelectric effect equation, and carried out pioneering cosmicray experiments. Robert Millikan, in full Robert Andrews Millikan, (born March 22, 1868, Morrison, Illinois, U.S.—died December 19, 1953, San Marino, California), American physicist honoured with the Nobel Prize for Physics in 1923 for his study of the elementary electronic charge and the photoelectric effect. He served as president of Caltech from 1921 to 1945. Mann translated from the German (1903); A First Course in Physics, with H.G. When the United States entered World War I in 1917, he became vice chairman of the National Research Council in Washington, D.C., where he helped scientists apply their research to the war effort. Pamper those you care about with a service or package to The Robert Andrew Collection, featuring our Signature Salon & Spa with men’s and women’s separate relaxation areas, The Menzone Barber Lounge & RA Dermaspa/Advanced Skin Treatment Spa. It might be outdated or ideologically biased. Grab a copy of our NEW encyclopedia for Kids! As a scientist, Millikan made numerous momentous discoveries, chiefly in the fields of electricity, optics, and molecular physics. In Millikan’s oil-drop experiment, he produced microscopic oil droplets and observed them falling in the space between two electrically charged plates.

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