![]() On the instigation of his professors, Millikan spent a year (1895-1896) in Germany, at the Universities of Berlin and Göttingen. (1895) for research on the polarization of light emitted by incandescent surfaces - using for this purpose molten gold and silver at the U.S. In 1893, after obtaining his mastership in physics, he was appointed Fellow in Physics at Columbia University. It was during this period that he developed his interest in the subject in which he was later to excel. After working for a short time as a court reporter, he entered Oberlin College (Ohio) in 1886.ĭuring 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. He led a rural existence in childhood, attending the Maquoketa High School (Iowa). His grandparents were of the Old New England stock which had come to America before 1750, and were pioneer settlers in the Middle West. ![]() (U.S.A.), as the second son of the Reverend Silas Franklin Millikan and Mary Jane Andrews. (1868-1953)Robert Andrews Millikan was born on the 22nd of March, 1868, in Morrison, Ill. The discovery of his law of motion of a particle falling towards the earth after entering the earth's atmosphere, together with his other investigations on electrical phenomena, ultimately led him to his significant studies of cosmic radiation.Biografia estratta da Nobel Lectures, Physics 1922-1941. 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. In addition, his studies of the Brownian movements in gases put an end to all opposition to the atomic and kinetic theories of matter. Next, he verified experimentally Einstein's all-important photoelectric equation, and made the first direct photoelectric determination of Planck's constant h (1912-1915). His earliest major success was the accurate determination of the charge carried by an electron, using his "falling-drop method" he also proved that this quantity was a constant for all electrons (1910), thus demonstrating the atomic structure of electricity. Millikan made numerous discoveries in the fields of electricity, optics, and molecular physics. During his early years at Chicago, he spent much time preparing textbooks and simplifying the teaching of physics. Millikan was an eminent teacher, and passing through the customary grades he became professor at that university in 1910, a post which he retained until 1921. ![]() Michelson, to become assistant at the newly established Ryerson Laboratory at the University of Chicago. Millikan spent a postgraduate year (from 1895-1896) in Germany, at the Universities of Berlin and Gottingen. ![]() ![]() 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. Robert Andrews Millikan was born in Morrison, Illinois, in 1868. ![]()
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