"Misconception – You cannot simultaneously measure both the position and the momentum of a particle.

Correct Physics – This is the wrong phrasing of Heisenberg’ s Uncertainty Principle (HUP), which actually states that the position and momentum are not simultaneously determined. This has a very different meaning than what is stated above. Uncertainty is a property of the quantum state and not determined by how measurements are done. No matter how a measurement is taken one cannot change the inherent uncertainty determined by the quantum state of the system."

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I still maintain that you cannot simultaneously measure both the position and the momentum of a particle. Simple, unless and until you take the measurement of the position or velocity there is a situation like that of the quantum cat. The cat is both dead and alive untill you open the box.

When you apply Heisenberg Uncertainity Principle you are opening the box.

Correct Physics – This is the wrong phrasing of Heisenberg’ s Uncertainty Principle (HUP), which actually states that the position and momentum are not simultaneously determined. This has a very different meaning than what is stated above. Uncertainty is a property of the quantum state and not determined by how measurements are done. No matter how a measurement is taken one cannot change the inherent uncertainty determined by the quantum state of the system."

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I still maintain that you cannot simultaneously measure both the position and the momentum of a particle. Simple, unless and until you take the measurement of the position or velocity there is a situation like that of the quantum cat. The cat is both dead and alive untill you open the box.

When you apply Heisenberg Uncertainity Principle you are opening the box.

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