This is the 3rd post in a series celebrating the centennial of the Homer L. Dodge Department of Physics and Astronomy.

Jens Rud Nielsen (1894-1979), a student of Niels Bohr, penned this manuscript held by the History of Science Collections entitled Memories of Niels Bohr. The original manuscript is available in its entirety in the History of Science Collections Online Galleries.

Nielsen published an article with the same title in Physics Today, 1963, vol. 16, pp. 22-30. The manuscript and published article are quite different.