character: Max Planck
topic: Quantum Theory
grade: 6
subject: Science
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character: Albert Einstein
topic: Photoelectric Effect
grade: 6
subject: Science
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character: Niels Bohr
topic: Bohr Model of the Atom
grade: 6
subject: Science
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character: Erwin Schrödinger
topic: Wave-Particle Duality
grade: 6
subject: Science
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