An old friend comes to visit.

[Ghoulish Delight]

Originally Posted by Moonliner

Sorry, but pop culture will not be denied! Besides that's what Heisenburg himself stated. Sure he was wrong, but there are you are.

Huh? Somehow I doubt the person who first described the ACTUAL Heisenberg Uncertainty Principle ever confused it with the observer effect.

[Moonliner]

Originally Posted by Ghoulish Delight

Huh? Somehow I doubt the person who first described the ACTUAL Heisenberg Uncertainty Principle ever confused it with the observe effect.

Heisenberg himself may have initially offered explanations which suggested this view ... Heisenberg's original argument used the 'old' quantum theory (namely, the Einstein-deBroglie relations) and provided a heuristic argument that the position and momentum observables were not simultaneously observable with infinite precision. The more modern uncertainty relations deal with independent measurements being done on an ensemble of systems.

[Ghoulish Delight]

Originally Posted by Moonliner

Heisenberg himself may have initially offered explanations which suggested this view ... Heisenberg's original argument used the 'old' quantum theory (namely, the Einstein-deBroglie relations) and provided a heuristic argument that the position and momentum observables were not simultaneously observable with infinite precision. The more modern uncertainty relations deal with independent measurements being done on an ensemble of systems.

Yes, which is NOT the same as "observing an event changes the event." The "position and momentum are not simultaneously observable" interpretation is far closer to the actual meaning of the uncertainty principle, it just ignores the fact that in reality, knowing one of the two provides a probable range of values for the second, rather than just make it unknowable. But either way, it's not the same as the observer effect.