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 go against on the negatron and for his moulding on the photo galvanic effect. He served as electric chair of Caltech from 1921 to 1945. He also served on the board of trustees for Science Service, like a shot 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 blast of mavin negatron J.J Thomson had already discovered , however the value of the electron were still unknown.Therefore if one of the twain values were to be anchor the other value would be easily compute, Millikan terminate up conclusion the dissipate 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 supercharged droplets of crude suspende d against gravity in the midst 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 whole number multiples of a greens value (1.592 × 10?19 coulomb), the charge on a one electron.

The Oil Drop essay: The experiment entailed equilibrize the downward gravitative force with the up(a) buoyant and electric forces on tiny charged droplets of anoint color suspended between two metal electrodes. Since the density of the oil was known, the droplets masses, and therefore their gravitational and buoyant forces, coul! d be determined from their discover radii. Using a known electric field, Millikan and Fletcher could determine still the charge on oil droplets in mechanical equilibrium. By repeating the experiment for many droplets, they confirmed that the charges were all multiples of nearly 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 entire essay, order it on our website: BestEssayCheap.com

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