2 mar 1909 año - Oil Drop Experiment An experiment performed by Robert Millikan in 1909 determined the size of the charge on an electron. What Millikan did was to put a charge on a tiny drop of oil, and measure how strong an applied electric field had to be in order to stop the oil drop from falling. Since he was able to work out the mass of the oil drop, and he could calculate the force of gravity on one drop, he could then determine the electric charge that the drop must have.
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2 mar 1909 año
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~ 115 years ago
