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| Description: PCS 125 Physics: Waves and Fields Robert Millikan measured e, the magnitude of the elementary charge on the electron He also demonstrated the quantized nature of this charge Oil droplets pass through a small hole and are illuminated by a light With no electric field between the plates, the gravitational force and the drag force (viscous) act on the electron The drop reaches terminal velocity with Fd=mg When an electric field is set up between the plates The upper plate has a higher potential The drop reaches a new terminal velocity when the electrical force equals the sum of the drag force and gravity Picture Stats: Views: 515 Filesize: 223.65kB Height: 713 Width: 950 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=28587 |