Physics, Astronomy & Cosmology / Re: QM puzzle: Is a measurement being made in the 2 slit experiement all the time?« on: Yesterday at 02:00:52 »
The question is: Isn't the phosporescent screen always making a measurement?Easy answer: Yes. More complicated: Yes, relative to the screen, just like the cat measures the poison bottle, so the bottle is not in superposition of closed/broke, but the bottle is still in superposition of those states relative to the lab observer. Copenhagen places a 'Heisenberg cut' at the boundary of where those states differ.
You seem to be asking if the electron misses the screen, is a measurement taken? Well, not by the screen (yet), but either the electron with interact with something else (and thus get measured by something else), or it never interacts, and is effectively nonexistent (according to any local interpretation at least).
Specifically isn't it possible that by constantly making a measurment, the phosphorescent screen ensures that the electron's wave function cannot collapse to the state where it would be at the screen?Yes. The comment only applies only to interpretations where collapse is meaningful. You'd have to word it differently for others, but still, effectively yes.
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