Milikan

Robert Andrews Millikan Bio:Robert A. Millikan (22 March 1868 19 December 1953) was an american physicist, and Nobel laureate in physics for his measurement of the kill on the negatron and for his mold on the photo galvanic effect. He served as professorship of Caltech from 1921 to 1945. He also served on the board of trustees for Science Service, flat know as Society for Science & the Public, from 1921-1953. Studies: In 1908 Millikan worked on the anoint drop sample in which they measured the rosiness of mavin negatron J.J Thomson had already discovered , however the determine of the electron were still unknown.Therefore if one of the 2 values were to be anchor the other value would be easily compute, Millikan end up conclusion the entrust of the electron which led to the finding of the electron mass by playing with electric charges and magnetized fields.His look into measured the force on tiny aerated droplets of crude suspended against gravity in the mid st of two metal electrodes. sagacious the electric field, the charge on the droplet could be determined. Repeating the sample for many droplets, Millikan showed that the results could be explained as integer multiples of a greens value (1.592 × 10?19 coulomb), the charge on a one electron.

The Oil Drop try: The experiment entailed equilibrize the downward gravitative force with the upward(a) buoyant and electric forces on tiny charged droplets of embrocate suspended between two metal electrodes. Since the density of the oil color was known, the droplets masses, and therefore their gravitational and buoyant forces, could be dete rmined from their observed radii. Using a k! nown electric field, Millikan and Fletcher could determine even out the charge on oil droplets in mechanical equilibrium. By repeating the experiment for many droplets, they confirmed that the charges were all multiples of both(prenominal) fundamental value, and calculated it to be 1.5924(17)×10?19 C. They proposed that this was the charge of a single electron.If you want to get a in full essay, order it on our website: BestEssayCheap.com

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