Dirichlet's Principle, Confomal Mapping and Minimal Surfaces by Courant R.

By Courant R.

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The document, dated 2 April 1944, constitutes a substantial expansion of the letter to Anderson from February and is the first extensive written account of Bohr’s position. The general structure of Bohr’s argument was already in place: first, a survey of the history of the atomic bomb project concentrating on the technical aspects and underscoring “the radical difference between this project and all previous technical efforts”; second, a general presentation of what Bohr perceived as the implications of the project after the war, repeating and building upon PART I: AN ‘‘OPEN WORLD’’ formulations already contained in the letter to Anderson from mid-February; and third, arguments for the need to act without delay.

In Stockholm Bohr visited the Swedish Foreign Minister and, later on the same day, Saturday 2 October, the Swedish king, who agreed to make public the Swedish offer to Hitler to accept the Danish Jews in Sweden. At this time, too, the invitation to England was repeated, and now Bohr accepted. 2. THE POLITICAL CAMPAIGN DURING THE WAR EXILE, 1943–1945 Although Bohr had already shown both an aptitude for and interest in political questions, his attempt to influence world politics started only during his wartime exile, prompted by his recognition that the atomic bomb was becoming a reality.

The official reason for Heisenberg’s visit was his participation in an astrophysics symposium at the German Cultural Institute, one of several such institutions established by the German authorities in occupied countries in order to encourage cooperation. Bohr avoided contact with the German authorities, but agreed to a private conversation with Heisenberg. 19 Although Heisenberg’s information may have caused him to reconsider the question briefly,20 Bohr remained sceptical with regard to the possibility of producing an atomic bomb, as documented by his correspondence with his British colleague James Chadwick in 1943.

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