Sir Alfred Peierls Memorandum Essay

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Sir Rudolf Peierls was born on June 5, 1907, in Berlin, Germany.He began his career in nuclear physics studying under Warner Heisenberg and Wolfgang Pauli. Heisenberg was a professor at Leipzig University and made contributions in quantum mechanics. Pauli made early contributions in quantum physics. In 1929, Peierls developed the theory of positive carriers, which explains the thermal and electrical conductivity behaviors of semiconductors. Sir Rudolf Peierls was a son of a Jewish businessman (Atomicarchive.com).
As a stroke of good luck he was already in Britain, studying at Cambridge University when
Adolf Hitler took charge of Germany. He was a professor of Physics in Birmingham from
1937 to 1943 and from 1945 to 1963. From 1943 and 1945, …show more content…

The Memorandum addressed previous discussions on using Uranium to make nuclear chain reactions in super bombs. These previous discussions considered Uranium an unusable option. However, the Memorandum “permits, in principle, the use of nearly pure 235U… [where] a moderate amount … would indeed constitute an extremely efficient explosive” (Frisch"Peierls Memorandum 1940). The
Memorandum discusses many things: fission velocity of neutrons, physical bomb construction, temperature produced by the reaction, and how radiation affects human beings (Frisch"Peierls Memorandum 1940). The velocity Sir Rudolf and Frisch calculated was 10"9cm/sec for 2.6 cm before the neutron hits the Uranium nucleus. They assumed
“that each neutron after a life of 2.6 x 10"9sec, produces fission, giving birth to two neutrons” (Frisch"Peierls Memorandum 1940). As a result, Sir Rudolf and Frisch applied the formula: E=0.2M(r2/r2)((r/ro)"1), and ultimately they believed that “the energy liberated by a 5 kg bomb would be equivalent to that of several thousand tons of dynamite, while that of a 1 kg bomb, though about 500 times less, would still be formidable” (Frisch"Peierls
Memorandum 1940). For reference, the little boy that was dropped on Hiroshima

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