PHYSICIST

Johannes Rydberg

1854 - 1919

Photo of Johannes Rydberg

Icon of person Johannes Rydberg

Johannes (Janne) Robert Rydberg (Swedish: [ˈrŷːdbærj]; 8 November 1854 – 28 December 1919) was a Swedish physicist mainly known for devising the Rydberg formula, in 1888, which is used to describe the wavelengths of photons (of visible light and other electromagnetic radiation) emitted by changes in the energy level of an electron in a hydrogen atom. Read more on Wikipedia

Since 2007, the English Wikipedia page of Johannes Rydberg has received more than 127,963 page views. His biography is available in 45 different languages on Wikipedia (up from 42 in 2019). Johannes Rydberg is the 272nd most popular physicist (down from 241st in 2019), the 142nd most popular biography from Sweden (down from 135th in 2019) and the 7th most popular Swedish Physicist.

Johannes Rydberg is most famous for his work on atomic spectra. He was the first to correctly explain the difference between the spectra of hydrogen and helium.

Memorability Metrics

  • 130k

    Page Views (PV)

  • 61.74

    Historical Popularity Index (HPI)

  • 45

    Languages Editions (L)

  • 10.77

    Effective Languages (L*)

  • 2.74

    Coefficient of Variation (CV)

Page views of Johannes Rydbergs by language

Over the past year Johannes Rydberg has had the most page views in the with 14,496 views, followed by Swedish (3,794), and Chinese (2,623). In terms of yearly growth of page views the top 3 wikpedia editions are Serbo-Croatian (121.54%), Haitian (111.54%), and Malagasy (102.60%)

Among PHYSICISTS

Among physicists, Johannes Rydberg ranks 272 out of 851. Before him are John Vincent Atanasoff, Allan MacLeod Cormack, Andrew Huxley, Jagadish Chandra Bose, Jean-François Pilâtre de Rozier, and Hugh David Politzer. After him are Edmond Becquerel, August Kundt, Carlo Rubbia, Leo Esaki, Ernest Walton, and Toshihide Maskawa.

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Contemporaries

Among people born in 1854, Johannes Rydberg ranks 16. Before him are James George Frazer, Paul Sabatier, Milan I of Serbia, Georges Picquart, George Eastman, and Albert Edelfelt. After him are Engelbert Humperdinck, Paul Natorp, Léo Taxil, Paul von Rennenkampf, Georg Kerschensteiner, and Duchess Marie of Mecklenburg-Schwerin. Among people deceased in 1919, Johannes Rydberg ranks 24. Before him are Archduke Ludwig Viktor of Austria, Milan Rastislav Štefánik, Ismail Qemali, Grand Duke Paul Alexandrovich of Russia, L. Frank Baum, and Kurt Eisner. After him are Terauchi Masatake, Leonid Andreyev, Habibullah Khan, Prince John of the United Kingdom, Guido von List, and Madam C. J. Walker.

Others Born in 1854

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Others Deceased in 1919

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In Sweden

Among people born in Sweden, Johannes Rydberg ranks 142 out of 1,879. Before him are Stenkil (1030), Prince Wilhelm, Duke of Södermanland (1884), Birgit Nilsson (1918), Roy Andersson (1943), Erland Josephson (1923), and Carin Göring (1888). After him are Canute I of Sweden (1150), Eric XI of Sweden (1216), Basshunter (1984), Zarah Leander (1907), Toomas Hendrik Ilves (1953), and Magnus I of Sweden (1106).

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Among PHYSICISTS In Sweden

Among physicists born in Sweden, Johannes Rydberg ranks 7. Before him are Manne Siegbahn (1886), Gustaf Dalén (1869), Anders Jonas Ångström (1814), Hannes Alfvén (1908), Kai Siegbahn (1918), and Rolf Maximilian Sievert (1896). After him are Vagn Walfrid Ekman (1874), Oskar Klein (1894), Christopher Polhem (1661), Knut Ångström (1857), Wilhelm Hisinger (1766), and Bert Bolin (1925).

Swedish born Physicists

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