The Discovery Of The Electron

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Timothy R


Date added:

November 22, 2016







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2 / 499


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The sign of the electron's charge is negative by convention, and that of the equally charged proton is positive. This is somewhat a unfortunate convention, because the flow of electrons in a conductor is opposite to the conventional direc tion of the current. The most accurate direct measurement of e is the oil drop experiment conducted by R...
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Milikan in 1909. In this experiment, the charges of droplets of oil in air are measured by finding the electric field which balances each drop against its weight. The weight of each drop is determined by observing its rate of free fall through the air, and using Stokes' formula for the viscous drag on a slowly moving sphere...
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