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Physics
Quantum Physics
Two-Slit Experiment And Varying Electron Momentum
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[QUOTE="vanhees71, post: 5472669, member: 260864"] Well, also in classical physics position and momentum are not independent from each other, because by definition in theoretical physics the momentum of a system is the operator that generates spatial translations. In QT from this the commutator relations for the corresponding operators follow, and from the commutator relation the Heisenberg uncertainty relation. Nevertheless in classical mechanics the particle always has well defined position and momentum. Even more, in classical mechanics all observables always take definite values, no matter whether you know them or not. That's the most unfamiliar property of quantum physics compared to classical theory. Quantum theory is probabilistic, and which observables take determined values is dependent on the state the system is prepared in, while classical physics is deterministic and all observables always take determined values. [/QUOTE]
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Forums
Physics
Quantum Physics
Two-Slit Experiment And Varying Electron Momentum
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