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Is it possible, practically or theoretically to measure the momentum of a quantum particle without altering the momentum? (the only real world tests I have read about involve collisions with other particles)
If so, what would be result of a measurement of momentum have if interjected between two measurements of spin on the same axis (like the Stern Gerlach experiment)? would the spin test still be repeatable or would perhaps the location of the particle change?
If so, what would be result of a measurement of momentum have if interjected between two measurements of spin on the same axis (like the Stern Gerlach experiment)? would the spin test still be repeatable or would perhaps the location of the particle change?