Ludwik Fleck

1896 - 1961

Ludwik Fleck

Ludwik Fleck (11 July 1896 – 5 June 1961) was a Polish and Israeli physician and biologist who did important work in epidemic typhus in Lwów, Poland, with Rudolf Weigl and in the 1930s developed the concepts of the "Denkstil" ("thought style") and the "Denkkollektiv" ("thought collective"). The concept of the "thought collective" defined by him is important in the philosophy of science and in logology (the "science of science"), helping to explain how scientific ideas change over time, much as in Thomas Kuhn's later notion of the "paradigm shift" and in Michel Foucault's concept of the "episteme". Read more on Wikipedia

Since 2007, the English Wikipedia page of Ludwik Fleck has received more than 64,530 page views. His biography is available in 17 different languages on Wikipedia making him the 246th most popular biologist.

Memorability Metrics

  • 65k

    Page Views (PV)

  • 54.24

    Historical Popularity Index (HPI)

  • 17

    Languages Editions (L)

  • 6.86

    Effective Languages (L*)

  • 1.65

    Coefficient of Variation (CV)

Page views of Ludwik Flecks by language


Among biologists, Ludwik Fleck ranks 246 out of 686Before him are Johann Baptist von Spix, Elisabeth Noelle-Neumann, Christen C. Raunkiær, Craig Venter, Otto Wilhelm Hermann von Abich, and Friedrich Parrot. After him are Michael Rosbash, John Gould, Frédéric Cuvier, Joy Adamson, Carl Nägeli, and Oldfield Thomas.

Most Popular Biologists in Wikipedia

Go to all Rankings


Among people born in 1896, Ludwik Fleck ranks 84Before him are Wolf-Heinrich Graf von Helldorff, Pavel Alexandrov, Morarji Desai, Jimmy Doolittle, Ville Ritola, and Léonide Massine. After him are Charlie Rivel, Henry Allingham, Rudolf Schmundt, Iona Yakir, Hinrich Lohse, and Prince Roman Petrovich of Russia. Among people deceased in 1961, Ludwik Fleck ranks 38Before him are Zoltán Tildy, Margherita Sarfatti, Mei Lanfang, Mukhtar Auezov, Herbert Pitman, and Robert Garrett. After him are Princess Isabelle of Orléans, Vanessa Bell, Arthur Drewry, Chester Barnard, Henri Breuil, and Seyyed Hossein Borujerdi.

Others Born in 1896

Go to all Rankings

Others Deceased in 1961

Go to all Rankings

In Ukraine

Among people born in Ukraine, Ludwik Fleck ranks 238 out of 764Before him are Alexander Siloti (1863), Marina Mniszech (1588), Efim Geller (1925), Alexius Meinong (1853), Pavel Sudoplatov (1907), and Isaak Brodsky (1883). After him are Samuel Noah Kramer (1897), Jerzy Kawalerowicz (1922), Vsevolod II of Kiev (1104), Lyudmila Gurchenko (1935), Oleksandr Turchynov (1964), and Alexander Marinesko (null).

Among BIOLOGISTS In Ukraine

Among biologists born in Ukraine, Ludwik Fleck ranks 4Before him are Élie Metchnikoff (1845), Trofim Lysenko (1898), and Theodosius Dobzhansky (1900). After him are Sergei Winogradsky (1856), Michał Boym (1614), Alexander Georg von Bunge (1803), Prince Maximilian of Wied-Neuwied (1782), and Ivan Martinov (1771).

Biologists Born in Ukraine

Go to all Rankings