Millikan Oil's drop experiment . Explain
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Millikan's Oil Drop Experiment | Introduction to Chemistry In 1909, Robert Millikan and Harvey Fletcher conducted the oil drop experiment to determine the charge of an electron. They suspended tiny charged droplets of oil between two metal electrodes by balancing downward gravitational force with upward drag and electric forces.
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Millikan Oil's drop experiment-
Millikan's oil drop experiment measured the charge of an electron. Before this experiment, existence of subatomic particles, was not universally accepted. Millikan's apparatus contained an electric field created between a parallel pair of metal plates, which were held apart by insulating material. Electrically charged oil droplets entered the electric field and were balanced between two plates by altering the field.
When the charged drops fell at a constant rate, the gravitational and electric forces on it were equal. Therefore, the charge on the oil drop was calculated using formula. Millikan found that the charge of a single electron was C.
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