character: Leo Szilard
topic: Advocate for nuclear chain reaction research
grade: 11
subject: Physics
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character: Albert Einstein
topic: Co-signed the letter to President Roosevelt urging research on nuclear fission
grade: 11
subject: Physics
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character: Enrico Fermi
topic: Key figure in the development of the first nuclear reactor, contributing to chain reaction research
grade: 11
subject: Physics
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character: Niels Bohr
topic: Influential in nuclear physics and promoted discussions on nuclear chain reactions
grade: 11
subject: Physics
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