INVENTOR

Charles Xavier Thomas

1785 - 1870

Photo of Charles Xavier Thomas

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Charles Xavier Thomas de Colmar (May 5, 1785 – March 12, 1870) was a French inventor and entrepreneur best known for designing, patenting, and manufacturing the first commercially successful mechanical calculator, known as the Arithmometer. Read more on Wikipedia

Since 2007, the English Wikipedia page of Charles Xavier Thomas has received more than 104,426 page views. His biography is available in 18 different languages on Wikipedia (up from 17 in 2019). Charles Xavier Thomas is the 194th most popular inventor (down from 188th in 2019), the 2,523rd most popular biography from France (down from 2,363rd in 2019) and the 28th most popular French Inventor.

Memorability Metrics

  • 100k

    Page Views (PV)

  • 55.30

    Historical Popularity Index (HPI)

  • 18

    Languages Editions (L)

  • 7.90

    Effective Languages (L*)

  • 1.52

    Coefficient of Variation (CV)

Among INVENTORS

Among inventors, Charles Xavier Thomas ranks 194 out of 426. Before him are Johann Christoph Denner, Samuel Pierpont Langley, Ottaviano Petrucci, Jethro Tull, Orban, and Christopher Latham Sholes. After him are David Edward Hughes, Lillian Moller Gilbreth, Oskar Barnack, Eunice Newton Foote, Émile Baudot, and David Schwarz.

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Contemporaries

Among people born in 1785, Charles Xavier Thomas ranks 24. Before him are Carl Adolph Agardh, William Prout, Isabella Colbran, Princess Maria Anna of Hesse-Homburg, Friedrich Wieck, and Prince Paul of Württemberg. After him are Nicholas Aylward Vigors, Adam Wilhelm Moltke, Adam Sedgwick, William Jackson Hooker, August Immanuel Bekker, and Victor de Broglie. Among people deceased in 1870, Charles Xavier Thomas ranks 28. Before him are Juan Prim, 1st Count of Reus, Grand Duke Alexander Alexandrovich of Russia, Konstantin Ushinsky, Charles Auguste de Bériot, David Farragut, and Justo José de Urquiza. After him are Paul-Émile Botta, Arthur Saint-Léon, Karel Jaromír Erben, Victor de Broglie, Aasmund Olavsson Vinje, and Cesare Pugni.

Others Born in 1785

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Others Deceased in 1870

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In France

Among people born in France, Charles Xavier Thomas ranks 2,523 out of 6,770. Before him are Michel de l'Hôpital (1505), Jean-Pierre Abel-Rémusat (1788), Zaz (1980), Prince Sixtus Henry of Bourbon-Parma (1940), Antoine-Louis Barye (1795), and Albert, 4th duc de Broglie (1821). After him are Georges Ohnet (1848), Jehan Alain (1911), Pierre Waldeck-Rousseau (1846), Jean Prouvé (1901), Louis Paul Cailletet (1832), and Édouard Drumont (1844).

Others born in France

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Among INVENTORS In France

Among inventors born in France, Charles Xavier Thomas ranks 28. Before him are Édouard-Léon Scott de Martinville (1817), Édouard Branly (1844), Guillaume Amontons (1663), Charles Cros (1842), Joseph Monier (1823), and Georges Claude (1870). After him are Émile Baudot (1845), Georges Hébert (1875), Léon Gaumont (1864), Wan Hu (1510), Alphonse Beau de Rochas (1815), and Louis Lumière (1864).

French born Inventors

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