Measurement is a process separate from unitary wavefunction evolution {measurement theory}|, because measurement causes state-vector reduction. Instruments, such as photodetectors or charge sensors, are not quantum mechanical. They detect momentum, energy, position, and time real positive values. Wavefunctions discontinuously precede and follow measurements. Measurements set initial conditions for wavefunctions.
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5-Physics-Quantum Mechanics-Theory
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Date Modified: 2022.0224