As we continue to learn about charge and voltage, I am able understand the principles and concepts in this unit. A neat experiment that caught my attention was the Millikan’s Apparatus Experiment. Robert Millikan and Harvey Fletcher found the single charge of an electron. This charge is 1.5924(17)×10−19 C. They proved this theory by being able to suspend oil droplets in mid air due to the pull of electrons and a positive plate. They sprayed oil droplets between two plates of very high voltage. As they looked through their microscope, they saw droplets fall to the bottom plate, and many droplets were pulled to the top plate, but few were completely suspended in mid air.
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