Learn more about history with this collection
The historical significance of urban centers
The impact of cultural and technological advances
The role of urban centers in shaping society
In March 1940, German physicists Rudolf Peierls and Otto Frisch wrote to the British government in their Memorandum on the Properties of a Radioactive 'Super-Bomb', urging them to take action. It led to the British bomb project, codenamed Tube Alloys.
The US government appointed physicist Arthur Compton to lead a nuclear weapons programme, eventually named the Manhattan Project. Over the next four years, the US, UK and Canada poured resources into the Manhattan Project. Tube Alloys was eventually joined with the US project.
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In 1942, a pile of uranium and graphite was assembled in a squash court underneath a stand on a football field in Chicago. Then, on 2 December 1942, the first man-made nuclear chain reaction was created. Once confirmed, Szilard shook hands with Fermi and said, “This will go down as a black da...
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After the discovery of Fermin, Szilard joined him in New York. Together they figured that a kilogram of uranium would make energy similar to 20,000 tonnes of TNT. However, Szilard knew that this discovery could be disastrous and feared that the Nazis would soon figure this out to...
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Leo Szilard, a Hungarian-born Jew, fled Germany for the UK two months after Adolf Hitler became chancellor.
At the time, James Chadwick just discovered the neutron. Not long after, Cambridge physicists split the atom by bo...
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