character: Ernest Rutherford
topic: Early Experiments in Nuclear Physics
grade: 9
subject: Physics
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character: Marie Curie
topic: Discovery of Radioactivity
grade: 9
subject: Physics
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character: Niels Bohr
topic: Bohr Model of the Atom
grade: 9
subject: Physics
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character: J.J. Thomson
topic: Discovery of the Electron
grade: 9
subject: Physics
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