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The oil drop experiment was performed by Robert A. Millikan and Harvey Fletcher in 1909 to measure the elementary electric charge (the charge of the electron). [1][2] The experiment took place in the Ryerson Physical Laboratory at the University of Chicago. [3][4][5] Millikan received the Nobel Prize in Physics in 1923. [6]
Bell Laboratories. Columbia University. Doctoral advisor. Robert A. Millikan. Harvey Fletcher (September 11, 1884 – July 23, 1981) was an American physicist. [1] Known as the "father of stereophonic sound ", he is credited with the invention of the 2-A audiometer [2] and an early electronic hearing aid. [3][4] He was an investigator into the ...
A famous method for measuring e is Millikan's oil-drop experiment. A small drop of oil in an electric field would move at a rate that balanced the forces of gravity, viscosity (of traveling through the air), and electric force. The forces due to gravity and viscosity could be calculated based on the size and velocity of the oil drop, so ...
Robert Andrews Millikan (March 22, 1868 – December 19, 1953) was an American experimental physicist who won the Nobel Prize for Physics in 1923 for the measurement of the elementary electric charge and for his work on the photoelectric effect. Millikan graduated from Oberlin College in 1891 and obtained his doctorate at Columbia University in ...
Robert Millikan's oil drop experiment demonstrated this fact directly, and measured the elementary charge. It has been discovered that one type of particle, quarks , have fractional charges of either − 1 / 3 or + 2 / 3 , but it is believed they always occur in multiples of integral charge; free-standing quarks have never been ...
This became the classic means of measuring the charge-to-mass ratio of the electron. (The charge itself was not measured until Robert A. Millikan's oil drop experiment in 1909.) Thomson believed that the corpuscles emerged from the atoms of the trace gas inside his cathode ray tubes. He thus concluded that atoms were divisible, and that the ...
Simplified_scheme_of_Millikan’s_oil-drop_experiment.png: Theresa Knott derivative work: Gregors ( talk ) 10:37, 25 March 2011 (UTC) This is a retouched picture , which means that it has been digitally altered from its original version.
Tom Weissert. Allan David Franklin (born 1 August 1938, Brooklyn) [1] is an American physicist, historian of science, and philosopher of science. Franklin received in 1959 his bachelor's degree from Columbia University and in 1965 his PhD in physics from Cornell University. [2] He was from 1965 to 1966 a postdoc and from 1966 to 1967 an ...