INVENTOR

Ralph Hartley

1888 - 1970

Photo of Ralph Hartley

Icon of person Ralph Hartley

Ralph Vinton Lyon Hartley (November 30, 1888 – May 1, 1970) was an American electronics researcher. Read more on Wikipedia

Since 2007, the English Wikipedia page of Ralph Hartley has received more than 125,225 page views. His biography is available in 19 different languages on Wikipedia (up from 18 in 2019). Ralph Hartley is the 281st most popular inventor (up from 288th in 2019), the 5,042nd most popular biography from United States (up from 5,447th in 2019) and the 68th most popular American Inventor.

Memorability Metrics

  • 130k

    Page Views (PV)

  • 50.56

    Historical Popularity Index (HPI)

  • 19

    Languages Editions (L)

  • 3.80

    Effective Languages (L*)

  • 2.49

    Coefficient of Variation (CV)

Among INVENTORS

Among inventors, Ralph Hartley ranks 281 out of 426. Before him are Theodore Maiman, Samuel Morland, Michael S. Hart, John Barnard, Whitcomb L. Judson, and Joseph Aspdin. After him are Prokop Diviš, George Devol, Sidney Gilchrist Thomas, Walter Zapp, Jacob Perkins, and Nils Bohlin.

Most Popular Inventors in Wikipedia

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Contemporaries

Among people born in 1888, Ralph Hartley ranks 152. Before him are Jinichi Kusaka, Harald Sverdrup, Konstantinos Tsiklitiras, Tirumalai Krishnamacharya, Elisabeth Schumann, and Vahram Papazian. After him are Louis J. Mordell, Manuel Gonçalves Cerejeira, Jean Bouin, Maxwell Anderson, Marcel Jouhandeau, and Franciszek Kleeberg. Among people deceased in 1970, Ralph Hartley ranks 151. Before him are Ed Begley, Inger Stevens, Alf Prøysen, Paul Schmidt, Alice Hamilton, and Fritz Kortner. After him are Alla Horska, Irawati Karve, Nathan Altman, Giuseppe Pizzardo, Eva Hesse, and Johnny Hodges.

Others Born in 1888

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Others Deceased in 1970

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In United States

Among people born in United States, Ralph Hartley ranks 5,042 out of 20,380. Before him are Lawrence Tierney (1919), John Elkann (1976), Jim Walton (1948), Anna Lea Merritt (1844), Cecil Taylor (1929), and Lydia Davis (1947). After him are Edward Stettinius Jr. (1900), Kathryn Adams (1893), Michael Blake (1945), Billy Paul (1934), Don Felder (1947), and Peter Sarsgaard (1971).

Others born in United States

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Among INVENTORS In United States

Among inventors born in United States, Ralph Hartley ranks 68. Before him are Robert Cornelius (1809), Glenn Curtiss (1878), Cyrus McCormick (1809), Theodore Maiman (1927), Michael S. Hart (1947), and Whitcomb L. Judson (1846). After him are George Devol (1912), Jacob Perkins (1766), Lester Allan Pelton (1829), Henry M. Leland (1843), Marion Donovan (1917), and David Bushnell (1742).

American born Inventors

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