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Births on April 20

Kai Siegbahn
1918Apr, 20

Kai Siegbahn

Kai Siegbahn, Swedish physicist and academic, Nobel Prize laureate (d. 2007)
Kai Manne Börje Siegbahn (20 April 1918 – 20 July 2007) was a Swedish physicist who was awarded the 1981 Nobel Prize in Physics.

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Events on 1918

  • 3Mar

    World War I

    Russia signs the Treaty of Brest-Litovsk, agreeing to withdraw from World War I, and conceding German control of the Baltic States, Belarus and Ukraine. It also conceded Turkish control of Ardahan, Kars and Batumi.
  • 2May

    Chevrolet Motor Company

    General Motors acquires the Chevrolet Motor Company of Delaware.
  • 24Jun

    Montreal

    First airmail service in Canada from Montreal to Toronto.
  • 4Jul

    Nicholas II of Russia

    Bolsheviks kill Tsar Nicholas II of Russia and his family (Julian calendar date).
  • 9Nov

    Wilhelm II, German Emperor

    Kaiser Wilhelm II of Germany abdicates after the German Revolution, and Germany is proclaimed a Republic.