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Martin Knudsen

1871 - 1949

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Martin Hans Christian Knudsen (February 15, 1871 in Hasmark on Funen – May 27, 1949 in Copenhagen) was a Danish physicist who taught and conducted research at the Technical University of Denmark.He is primarily known for his study of molecular gas flow and the development of the Knudsen cell, which is a primary component of molecular beam epitaxy systems. Knudsen received the University's gold medal in 1895 and earned his master's degree in physics the following year. He became lecturer in physics at the University in 1901 and professor in 1912, when Christian Christiansen (1843–1917) retired. Read more on Wikipedia

Since 2007, the English Wikipedia page of Martin Knudsen has received more than 71,758 page views. His biography is available in 23 different languages on Wikipedia (up from 22 in 2019). Martin Knudsen is the 421st most popular physicist (down from 414th in 2019), the 239th most popular biography from Denmark (up from 245th in 2019) and the 5th most popular Danish Physicist.

Memorability Metrics

  • 72k

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  • 53.58

    Historical Popularity Index (HPI)

  • 23

    Languages Editions (L)

  • 7.82

    Effective Languages (L*)

  • 2.07

    Coefficient of Variation (CV)

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Among physicists, Martin Knudsen ranks 421 out of 717Before him are Federico Faggin, Yoshio Nishina, Meghnad Saha, Vladimir Fock, John C. Mather, and Heinrich Barkhausen. After him are Johannes Franz Hartmann, Jules Jamin, Mohsen Fakhrizadeh, Yulii Khariton, Nicholas Georgescu-Roegen, and Walther Gerlach.

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Among people born in 1871, Martin Knudsen ranks 65Before him are Erich von Tschermak, Arthur Tansley, Gjergj Fishta, Alajos Szokolyi, Segundo de Chomón, and Meletius IV of Constantinople. After him are Jovan Dučić, Wilhelm von Mirbach, Fritz Hofmann, Abanindranath Tagore, Slavoljub Eduard Penkala, and Hermann Abert. Among people deceased in 1949, Martin Knudsen ranks 71Before him are Vladimir Nazor, Infanta Blanca of Spain, Alejandro Lerroux, Wakatsuki Reijirō, Koçi Xoxe, and Lead Belly. After him are Damaskinos of Athens, James Forrestal, Tan Malaka, Boris Asafyev, Momčilo Tapavica, and Traicho Kostov.

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In Denmark

Among people born in Denmark, Martin Knudsen ranks 239 out of 893Before him are Elizabeth of Denmark, Electress of Brandenburg (1485), Hans Christian Lumbye (1810), Harald Klak (null), Per Kirkeby (1938), Augusta of Denmark (1580), and Estrid Svendsdatter (990). After him are Lars Mikkelsen (1964), Holger Nielsen (1866), Prince Christian of Schleswig-Holstein (1831), Eugenius Warming (1841), Princess Dagmar of Denmark (1890), and Jens Otto Krag (1914).

Among PHYSICISTS In Denmark

Among physicists born in Denmark, Martin Knudsen ranks 5Before him are Hans Christian Ørsted (1777), Niels Bohr (1885), Aage Bohr (1922), and Christian Bohr (1855). After him are Ole Worm (1588), Lene Hau (1959), and Ludvig Lorenz (1829).