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Walter Lincoln Hawkins
Richard Hamming
Ralph Hartley
Information theory innovator
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.
Hartley was born in Sprucemont, Nevada, and attended the University of Utah, receiving an A.B. degree in 1909. He became a Rhodes Scholar at St Johns, Oxford University, in 1910 and received a B.A. degree in 1912 and a B.Sc. degree in 1913. He married Florence Vail… More on Wikipedia →
Timeline events (2)
Related concepts (5)
Hartley (unit)
The hartley, also called a ban, or a dit, is a logarithmic unit that measures information or entropy, based on base 10 logarithms and powers of 10. One hartley is the inf…
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 amount of inform…
Hartley oscillator
The Hartley oscillator is an electronic oscillator circuit in which the oscillation frequency is determined by a tuned circuit consisting of capacitors and inductors, tha…
Hartley transform
In mathematics, the Hartley transform (HT) is an integral transform closely related to the Fourier transform (FT), but which transforms real-valued functions to real-valu…
Shannon–Hartley theorem
In information theory, the Shannon–Hartley theorem tells the maximum rate at which information can be transmitted over a communications channel of a specified bandwidth i…