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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.
Feb 24, 2016 · 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. As a Rhodes Scholar, he received the B.A. degree in 1912 and the B.Sc. degree in 1913 from Oxford University.
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 ...
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This manuscript, which Hartley wrote in 1933, shows how he continued to refine his ideas about classical mechanics and Maxwell’s equations. It is the introduction to a much longer paper that he was preparing to submit to peer-reviewed journals. There are two things worth pointing out about this document.
Hartley's 1928 paper, called simply "Transmission of Information", went further by using the word information (in a technical sense), and making explicitly clear that information in this context was a measurable quantity, reflecting only the receiver's ability to distinguish that one sequence of symbols had been intended by the sender rather ...
Hartley function. The Hartley function is a measure of uncertainty, introduced by Ralph Hartley in 1928. If a sample from a finite set A uniformly at random is picked, the information revealed after the outcome is known is given by the Hartley function. where | A | denotes the cardinality of A . If the base of the logarithm is 2, then the unit ...
Feb 18, 2017 · Adjunct Professor Ralph Hartley has been in the field of anthropology for forty years, beginning his career as an assistant for the Department of Anthropology at the University of Nebraska-Lincoln. With degrees in history, anthropology and geography, he has covered fields ranging from prehistoric rock art to modern atrocities.
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