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About: Mark Barr     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingpersonyago:WikicatAmericanMathematiciansyago:CausalAgent100007347yago:LivingThing100004258yago:Mathematician110301261yago:Object100002684yago:Organism100004475yago:Person100007846yago:PhysicalEntity100001930yago:YagoLegalActoryago:YagoLegalActorGeoyago:Scientist110560637yago:Whole100003553 New Facet based on Instances of this Class

James Mark McGinnis Barr (May 18, 1871 – December 15, 1950) was an electrical engineer, physicist, inventor, and polymath known for proposing the standard notation for the golden ratio. Born in America, but with English citizenship, Barr lived in both London and New York City at different times of his life. Though remembered primarily for his contributions to abstract mathematics, Barr put much of his efforts over the years into the design of machines, including calculating machines. He won a gold medal at the 1900 Paris Exposition Universelle for an extremely accurate engraving machine.