character: Marie Curie
topic: Radioactivity and Behavior of Matter in Radioactive States
grade: 9
subject: Physics
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character: Albert Einstein
topic: Theoretical Foundations of Radioactivity
grade: 9
subject: Physics
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character: Niels Bohr
topic: Atomic Structure and Radioactive Decay
grade: 9
subject: Physics
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character: Ernest Rutherford
topic: Experimental Evidence of Radioactivity
grade: 9
subject: Physics
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