Frisch–Peierls memorandum

The Frisch–Peierls memorandum was the first technical exposition of a practical atomic weapon. Written by Otto Frisch and Rudolf Peierls in March 1940 while they were both working at the University of Birmingham in England, the memorandum contained new calculations about the size of the critical mass needed for an atomic bomb, and helped accelerate British and U.S. efforts towards bomb development during World War II.

Frisch–Peierls memorandum

The Frisch–Peierls memorandum was the first technical exposition of a practical atomic weapon. Written by Otto Frisch and Rudolf Peierls in March 1940 while they were both working at the University of Birmingham in England, the memorandum contained new calculations about the size of the critical mass needed for an atomic bomb, and helped accelerate British and U.S. efforts towards bomb development during World War II.