British contribution to the Manhattan Project
Scientists Rudolf Peierls and Otto Frisch calculated that the critical mass of a metallic sphere of pure uranium-235 was as little as 1 to 10 kilograms. The Frisch–Peierls memorandum prompted Britain to create an atomic bomb project. A British Mission led by Wallace Akers assisted in the development of gaseous diffusion technology in New York. Britain also produced the powdered...
