John Harrison

1693 - 1776

John Harrison

John Harrison (3 April [O.S. 24 March] 1693 – 24 March 1776) was a self-educated English carpenter and clockmaker who invented the marine chronometer, a long-sought-after device for solving the problem of calculating longitude while at sea. Harrison's solution revolutionized navigation and greatly increased the safety of long-distance sea travel. The problem he solved was considered so important following the Scilly naval disaster of 1707 that the British Parliament offered financial rewards of up to £20,000 (equivalent to £3.17 million in 2020) under the 1714 Longitude Act.In 1730, Harrison presented his first design, and worked over many years on improved designs, making several advances in time-keeping technology, finally turning to what were called sea watches. Read more on Wikipedia

Since 2007, the English Wikipedia page of John Harrison has received more than 1,287,202 page views. His biography is available in 39 different languages on Wikipedia making him the 76th most popular inventor.

Memorability Metrics

  • 1.3M

    Page Views (PV)

  • 61.93

    Historical Popularity Index (HPI)

  • 39

    Languages Editions (L)

  • 5.28

    Effective Languages (L*)

  • 3.77

    Coefficient of Variation (CV)

Page views of John Harrisons by language


Among inventors, John Harrison ranks 76 out of 323Before him are Oleg Antonov, Percy Spencer, Paul Gottlieb Nipkow, Jacques de Vaucanson, Charles K. Kao, and Ray Tomlinson. After him are Alois Senefelder, Jacques Piccard, Vladimir K. Zworykin, Cornelis Drebbel, Leo Fender, and Richard Arkwright.

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Among people born in 1693, John Harrison ranks 4Before him are Pope Clement XIII, Anna of Russia, and James Bradley. After him are Anne Sophie Reventlow, Thomas Pelham-Holles, 1st Duke of Newcastle, Louise Élisabeth de Bourbon, Alexey Bestuzhev-Ryumin, and John Lombe. Among people deceased in 1776, John Harrison ranks 3Before him are David Hume and Yeongjo of Joseon. After him are Natalia Alexeievna, Louis François, Prince of Conti, Jeanne Julie Éléonore de Lespinasse, Philipp Ludwig Statius Müller, John Ellis, Nathan Hale, and James Ferguson.

Others Born in 1693

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Others Deceased in 1776

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In United Kingdom

Among people born in United Kingdom, John Harrison ranks 594 out of 5,347Before him are John Gurdon (1933), Prince Andrew, Duke of York (1960), Peter Greenaway (1942), H. Rider Haggard (1856), William Dampier (1651), and Benjamin Graham (1894). After him are Oliver Heaviside (1850), Philippa of Lancaster (1360), William John Macquorn Rankine (1820), Gladwyn Jebb (1900), Daniel Craig (1968), and Olaf III of Norway (1050).

Among INVENTORS In United Kingdom

Among inventors born in United Kingdom, John Harrison ranks 14Before him are John Herschel (1792), John Boyd Dunlop (1840), Henry Fox Talbot (1800), Henry Bessemer (1813), Frank Whittle (1907), and Thomas Savery (1650). After him are Richard Arkwright (1732), William Webb Ellis (1806), Edmund Cartwright (1743), James Hargreaves (1720), Robert Stirling (1790), and W. O. Bentley (1888).