Individual #quantum_mechanics__quantummechanic  the branch of quantum physics that accounts for matter at the atomic level; an extension of statistical mechanics based on quantum theory (especially the Pauli exclusion principle)
  >part of:  quantum_physics  the branch of physics based on quantum theory
  >part:  wave_mechanics  the modern form of quantum theory; an extension of of quantum mechanics based on Schrodinger's equation; atomic events are explained as interactions between particle waves

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