Abstract

The charge of an electron is a fundamental constant important in many fields across physics. Using the Millikan oil drop experiment, the charges of oil drops are determined based on the velocity at which each drop falls. By analyzing the charge of the drops due to excess electrons, all of the charges are determined to be approximate multiples of each other and are all separated by the charge of an electron. Once the charge of each oil drop is determined, it is compared to the predicted amount of excess electrons, allowing the electron charge to be approximated: \(1.52(9) \times 10^{-19} \text{C}\).

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