Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Oil_drop_experiment> ?p ?o }
- Oil_drop_experiment abstract "The oil drop experiment was an experiment performed by Robert A. Millikan and Harvey Fletcher in 1909 to measure the elementary electric charge (the charge of the electron).The experiment entailed observing tiny charged droplets of oil between two horizontal metal electrodes. First, with zero applied electric field, the terminal velocity of a droplet was measured. At terminal velocity, the drag force equals the gravitational force, and these depend on the radius in different ways, so that the radius of the droplet, and therefore the mass and gravitational force, could be determined (using the known density of the oil). Then an adjustable voltage was applied between the plates to induce an electric field, and the voltage was adjusted until the drops were suspended in mechanical equilibrium, indicating that the electrical force and the gravitational force were balanced. Now using the known electric field, Millikan and Fletcher could determine the charge on the oil droplet. By repeating the experiment for many droplets, they confirmed that the charges were all small integer multiples of a certain base value, which was found to be 6981159240000000000♠1.5924(17)×10−19 C, within 1% of the currently accepted value of 6981160217648699999♠1.602176487(40)×10−19 C. They proposed that this was the (negative of the) charge of a single electron.".
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- Oil_drop_experiment wikiPageWikiLinkText "Millikan experiment".
- Oil_drop_experiment wikiPageWikiLinkText "Millikan's demonstration".
- Oil_drop_experiment wikiPageWikiLinkText "Oil drop experiment".
- Oil_drop_experiment wikiPageWikiLinkText "oil drop experiment".
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