John Harrison

1693 - 1776

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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 £3.35 million in 2022) 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 1,585,199 page views. His biography is available in 42 different languages on Wikipedia (up from 41 in 2019). John Harrison is the 87th most popular inventor (down from 79th in 2019), the 676th most popular biography from United Kingdom (down from 601st in 2019) and the 16th most popular Inventor.

John Harrison is most famous for inventing the marine chronometer.

Memorability Metrics

  • 1.6M

    Page Views (PV)

  • 62.34

    Historical Popularity Index (HPI)

  • 42

    Languages Editions (L)

  • 5.24

    Effective Languages (L*)

  • 3.91

    Coefficient of Variation (CV)

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Among inventors, John Harrison ranks 87 out of 354Before him are Momofuku Ando, Ray Tomlinson, Sakichi Toyoda, Bi Sheng, Franz Reichelt, and Alois Senefelder. After him are Alphonse Bertillon, Cornelis Drebbel, Daniel Swarovski, Abraham-Louis Breguet, Étienne-Jules Marey, and Elisha Otis.

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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, Countess Palatine Elisabeth Auguste Sofie of Neuburg, Louise Élisabeth de Bourbon, Abul Khair Khan, Thomas Pelham-Holles, 1st Duke of Newcastle, Georg Rafael Donner, 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, Duchess Maria Anna Josepha of Bavaria, Philipp Ludwig Statius Müller, John Ellis, Sabah I bin Jaber, Johann Adolf Scheibe, and Johann Jakob Breitinger.

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In United Kingdom

Among people born in United Kingdom, John Harrison ranks 676 out of 7,765Before him are William Ewart Gladstone (1809), Macbeth, King of Scotland (1005), Stirling Moss (1929), Thomas Chippendale (1718), J. L. Austin (1911), and Amélie of Orléans (1865). After him are Jude Law (1972), Ian McEwan (1948), Princess Charlotte of Wales (1796), Edward of Middleham, Prince of Wales (1473), Chris Slade (1946), and Naomi Watts (1968).

Among INVENTORS In United Kingdom

Among inventors born in United Kingdom, John Harrison ranks 16Before him are Frank Whittle (1907), Henry Fox Talbot (1800), Thomas Savery (1650), Richard Arkwright (1732), James Hargreaves (1720), and Henry Bessemer (1813). After him are Edmund Cartwright (1743), W. O. Bentley (1888), William Webb Ellis (1806), Samuel Crompton (1753), Clive Sinclair (1940), and John Kay (1704).