Abstract

The Millikan Oil-Drop Experiment is a classic in the realm of physics. Starting in 1909, with a final apparatus built in 1914, Robert A. Millikan found exactly the value of e (the charge of the electron) and proved that charge was quantized. Lee and I recreated his experiment (using modern materials and equipment) and attempted to find the value of e and prove the quantization of charge. Measurements were teadious to take, but in the end we found that charge is quantized. When plotting appropriate graphs (see results) one can easily see the quantized nature of charge and determine the value of e. We determined e (1.68+/-0.06E-19 C) to within 5% of the accepted value (1.602E-19 C).