Tyler DeWitt | Charge of an Electron: Millikan's Oil Drop Experiment @tdewitt451 | Uploaded December 2012 | Updated October 2024, 4 minutes ago.
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How did scientists discover how much negative charge an electron had? Robert Millikan and Harvey Fletcher used the oil drop experiment. They looked an tiny droplets of oil, and balanced the downward gravitational (gravity) force with an upward electrical force. At this point, they knew the forces had to equal, and they calculate the charge on the oil drops.
To see all my Chemistry videos, check out
socratic.org/chemistry
How did scientists discover how much negative charge an electron had? Robert Millikan and Harvey Fletcher used the oil drop experiment. They looked an tiny droplets of oil, and balanced the downward gravitational (gravity) force with an upward electrical force. At this point, they knew the forces had to equal, and they calculate the charge on the oil drops.