Designed to demonstrate the famous Millikan Oil Drop experiment, this apparatus uses latex spheres of uniform size and density to determine the approximate value for the charge on an electron. Each sphere, caught in the 50X microscope and between charged plates has some multiple of the fundamental charge, and the search is on to find the least common denominator.
Determining the Electron Charge by the Millikan Oil Drop Experiment
Forensics Lab Supply Number 3216101.
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