Recent content by ObbtiGime

Let's get this right, Bell had a theory, nature violates that theory, so nature is wrong and Bell's theory is right? Have I got that right? Edit: To clarify, nature doesn't agree with what Bell theorized should happen. Nature actually does something that diagrees with Bell's theorem, and...

So does measuring z spin affect z spin or does it not? If it does, then measuring it twice will probably give 2 different results no? If it does not affect it, then how do we know that it wasn't already in that state before measuring it the first time?

Whatever I can find on the net... "Although no experiment had been conducted in which every loophole has been closed, most physicists accept that Bell's inequality has been violated." (bold is mine) From Kumar, M., Quantum, Icon Books, 2009, p. 350

Can you clarify on this please? If you can perform a different measurement that still allows you to know what the (say) z spin is, then you have, effectively, measured the z spin surely? Earlier we ascertained that measuring the z spin will not change the z spin (though it might change other...

Ok, done that. I fail to see how that (unproven) theory (which seems to have been more or less discounted by many) answers the question. Which bit am I not getting here? There doesn't seem to be any mystery. A pair of particles are entangled. We have no way of determining the spin until we...

So measuring the z spin does not affect the z spin. So, the first time it is measured (back to the original experiment), how do we know that it wasn't already in that state? Where is the mystery? There is now no need for the second particle to instantaneously settle its state, because it was...

Thanks again. So measuring the z spin doesn't affect the z spin. But it randomly changes the x spin (and vice versa)? Again thank you.

Thanks, what would happen if you took that same electron, measured its z spin, then measured it again, then again. What would the results be? Are they proofs or theories?

First post so I'll jump straight in at the deep end (for me). Excuse me if this is a daft question but this is all new to me :) In an experiment, two electrons are entangled then separated. Someone then measures the x spin of one of them and finds it to be +. The x spin of the second...