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His mother was a dean at a Michigan college before she relocated to Illinois and his father was a Congregational minister. Their names were Mary Jane Andrews and Silas Franklin Millikan.

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Graduated from Oberlin College in Oberlin, Ohio in 1895.

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Graduated from Oberlin College in Oberlin, Ohio in 1895.

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After college, he became an assistant professor in 1896 for The University of Chicago. During his time as an assistant, he wrote several college and high school physics textbooks.

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Millikan married Greta Erwin Blanchard in 1902.

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Millikan married Greta Erwin Blanchard in 1902.

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They had three sons, Clark Blanchard, Glenn Allen, and Max Franklin.

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In 1909 he began experiments to determine the electrical charge of an electron.

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In 1909 he began experiments to determine the electrical charge of an electron.

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He did not believe the experiment's results due to not enough accuracy to be convinvincing.

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In 1910 he got more precise results with his oil-drop experiment.

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In 1910 he got more precise results with his oil-drop experiment.

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He replaced the water with oil since the water evaporated quickly.

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He varied the electric voltage between two metal plates as the oil drop fell between them until it stopped falling. When the drop was stationary, the force of gravity on the drop equaled the electrical force on the charges in the drop, and then Millikan could measure how much charge the drop had.

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In 1916 he experimentally verified the equation introduced by Albert Einstein in 1905 to describe photoelectric effect.

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In 1916 he experimentally verified the equation introduced by Albert Einstein in 1905 to describe photoelectric effect.

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During 1917 which was World War 1 he became the vice chairman of the National Research Council in Washington, D.C.

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During 1917 which was World War 1 he became the vice chairman of the National Research Council in Washington, D.C.

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In 1921 he left the University of Chicago to become director of the Norman Bridge Laboratory of Physics at the California Institute of Technology in Pasadena.

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In 1921 he left the University of Chicago to become director of the Norman Bridge Laboratory of Physics at the California Institute of Technology in Pasadena.

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There he studied radiation that Victor Hess detected in outer space.

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He was awarded the Nobel Prize for Physics in 1923 for studying the elementary electronic charge and the photoelectric effect.

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Worked at California Institute of Technology as the chairman of the executive council. From 1921 to his retirement in 1945.

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Worked at California Institute of Technology as the chairman of the executive council. From 1921 to his retirement in 1945.

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Died: December 19, 1953 in San Marino, California

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Died: December 19, 1953 in San Marino, California

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He played tennis, as well as golf