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 £3.17 million in 2021) 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 1,423,471 page views. His biography is available in 41 different languages on Wikipedia (up from 39 in 2019). John Harrison is the 79th most popular inventor (down from 76th in 2019), the 602nd most popular biography from United Kingdom (down from 594th in 2019) and the 16th most popular British Inventor.

John Harrison is most famous for inventing the marine chronometer.

Memorability Metrics

  • 1.4M

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  • 71.77

    Historical Popularity Index (HPI)

  • 41

    Languages Editions (L)

  • 5.75

    Effective Languages (L*)

  • 3.65

    Coefficient of Variation (CV)

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Among inventors, John Harrison ranks 79 out of 355Before him are Wolfgang von Kempelen, Jacques Piccard, Paul Gottlieb Nipkow, Alois Senefelder, Edmund Cartwright, and Henry Bessemer. After him are Alphonse Bertillon, Ray Tomlinson, Étienne-Jules Marey, Percy Spencer, Bi Sheng, and Momofuku Ando.

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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, Louise Élisabeth de Bourbon, Countess Palatine Elisabeth Auguste Sofie of Neuburg, Thomas Pelham-Holles, 1st Duke of Newcastle, Georg Rafael Donner, Abul Khair Khan, 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, John Ellis, Philipp Ludwig Statius Müller, Johann Adolf Scheibe, Johann Jakob Breitinger, Nathan Hale, and James Ferguson.

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In United Kingdom

Among people born in United Kingdom, John Harrison ranks 602 out of 6,924Before him are John Snow (1813), Annie Lennox (1954), William Dampier (1651), John Henry Newman (1801), Jane Hawking (1944), and Edward de Vere, 17th Earl of Oxford (1550). After him are Henry Fielding (1707), Peter Finch (1916), Thomas Tallis (1502), Sir Arthur Harris, 1st Baronet (1892), Hugh Laurie (1959), and Eduard Suess (1831).

Among INVENTORS In United Kingdom

Among inventors born in United Kingdom, John Harrison ranks 16Before him are Henry Fox Talbot (1800), Frank Whittle (1907), Richard Arkwright (1732), Thomas Savery (1650), Edmund Cartwright (1743), and Henry Bessemer (1813). After him are William Webb Ellis (1806), James Hargreaves (1720), Samuel Crompton (1753), W. O. Bentley (1888), Robert Stirling (1790), and John Kay (1704).