One of the scientists involved in this experiment helped to validate the photoelectric effect by creating what amounted to one of the world's first clean rooms to protect the photo-cathode he used. Originally, X-rays were used to ionize the air in this experiment, but today's repetitions often substitute alpha particles from a thorium isotope. Richard Feynman noted in a commencement address to Caltech that this experiment's result promoted (*) bias in the analysis of further experiments of similar types. A principal aspect of this experiment was the use of Stokes' Law to calculate drag before appropriately adjusting the electric field. For 10 points, identify this experiment performed at the University of Chicago in 1909 that measured the e
One of the scientists involved in this experiment helped to validate the photoelectric effect by creating what amounted to one of the world's first clean rooms to protect the photo-cathode he used. Originally, X-rays were used to ionize the air in this experiment, but today's repetitions often substitute alpha particles from a thorium isotope. Richard Feynman noted in a commencement address to Caltech that this experiment's result promoted (*) bias in the analysis of further experiments of similar types. A principal aspect of this experiment was the use of Stokes' Law to calculate drag before appropriately adjusting the electric field. For 10 points, identify this experiment performed at the University of Chicago in 1909 that measured the elementary charge of the electron.
One of the scientists involved in this experiment helped to validate the photoelectric effect by creating what amounted to one of the world's first clean rooms to protect the photo-cathode he used.
Millikan oil drop experiment