Quantum Superposition
Define superposition as a quantum particle existing in multiple states simultaneously, and distinguish it from classical uncertainty or ignorance.
Interpret a wave function as a mathematical description of superposition, where coefficients represent the probability amplitude of each state.
Explain how measurement forces a superposed particle into one definite state, and recognize why repeated measurements yield the same result.
Distinguish coherent superposition (pure state) from decoherent superposition (mixed state), and identify environmental interaction as the cause of decoherence.