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1. Before reaching the double slit, the electron is described by the time-dependent Schrödinger equation (TDSE)...

1. Before reaching the double slit, the electron is described by the time-dependent Schrödinger equation (TDSE) for a freely moving particle. Starting with the time- independent Schrödinger equation (TISE), use separation of variables of the wave- function and the quantum energy relation to get the TDSE for a free particle.

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