Kapitza Club
The Kapitza Club was a group of physicists who met informally in the 1920s and 1930s in Cambridge, England. The group was founded by Soviet physicist Peter Kapitza.
In The Making of the Atomic Bomb, author Richard Rhodes describes the Kapitza Club:
Graham Farmelo describes the founding of the Kapitza Club in The Strangest Man: The Hidden Life of Paul Dirac, Mystic of the Atom: