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The Millikens Oil Drop Experiment was an experiment performed by Robert A. Millikan and Harvey Fletcher in 1909 to measure the charge of an electron. This experiment proved to be very crucial in the physics community.
Millikan oil-drop experiment, first direct and compelling measurement of the electric charge of a single electron. It was performed originally in 1909 by the American physicist Robert A. Millikan, who devised a method of measuring the minute electric charge that is present on many of the droplets in an oil mist.
Millikan and Fletcher's experiment involved measuring the force on oil droplets in a glass chamber sandwiched between two electrodes, one above and one below. With the electrical field calculated, they could measure the droplet's charge, the charge on a single electron being ( −1.592 × 10−19 C ).
THEORY. In this experiment you will use tiny droplets of oil. When these droplets fall under the influence of gravity it takes them only a few milliseconds to reach a terminal (constant) speed vf, where the downward force of gravity is balanced by the upward drag force from the air.
Feb 2, 2023 · The Oil Drop Experiment was performed by the American physicist Robert A Millikan in 1909 to measure the electric charge carried by an electron. Their original experiment, or any modifications thereof to reach the same goal, are termed as oil drop experiments, in general.
Millikan's experiment is based on observing charged oil droplets in free fall and the presence of an electric field. A fine mist of oil is sprayed across the top of a perspex cylinder with a small 'chimney' that leads down to the cell (if the cell valve is open).
Oil drop experiment. Robert A. Millikan.. (1909). e=1.5924(17)×10−19. Shot noise experiment. First proposed by Walter H. Schottky. In terms of the Avogadro constant and Faraday constant =. F- Faraday constant, NA- Avagadro constant. Best.
