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Ralph Vinton Lyon Hartley (30 de novembro de 1888 — 1 de maio de 1970) foi um engenheiro eletrônico estadunidense. Inventou o oscilador de Hartley e a transformada de Hartley e contribuiu para os fundamentos da teoria da informação.
Ralph Vinton Lyon Hartley (November 30, 1888 – May 1, 1970) was an American electronics researcher. He invented the Hartley oscillator and the Hartley transform, and contributed to the foundations of information theory. His legacy includes the naming of the hartley, a unit of information equal to one decimal digit, after him.
O bit é tratado matematicamente por um logaritmo, como feito em 1927 por Ralph Hartley, correspondendo à quantidade de informação armazenada em um sistema de duas posições (como um interruptor). N interruptores possuem 2 N estados podendo, portanto, carregar consigo l o g 2 2 N = N bits.
30 de nov. de 2021 · Inventores. Ralph Hartley – um dos fundadores da teoria da informação. 2021-11-30. Ralph Hartley nasceu a 30 de novembro de 1888 nos Estados Unidos. Começou por estudar na Universidade de Utah e mais tarde formou-se também na Universidade de Oxford.
24 de fev. de 2016 · Circuitry. Awards. IRE Medal of Honor. Biography. Ralph V. L. Hartley inventor of the electronic oscillator circuit that bears his name, was born in Spruce, Nevada, on 30 November 1888. He graduated with the A.B. degree from the University of Utah in 1909.
Ralph Hartley. (1888-1970) Ralph Hartley graduated from University of Utah and went to Oxford in 1910 as one of the first Rhodes scholars, the same year as Elmer Davis and Edwin Hubble . He returned to the US to work for Western Electric, the manufacturing arm of the Bell Telephone Company. He developed an oscillating circuit that was used in ...
Quantitative ideas of information. The most direct antecedents of Shannon's work were two papers published in the 1920s by Harry Nyquist and Ralph Hartley, who were both still research leaders at Bell Labs when Shannon arrived in the early 1940s.
