Timeline for Common false beliefs in Physics
Current License: CC BY-SA 2.5
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 5, 2010 at 17:55 | comment | added | Marek | @Pavel: okay, done. It's interesting but it's still just the good old correlation of entangled spins, nothing more. Calling it non-local (or second-best, or whatever) is just confusing and precisely the reason why people think there is superluminal communication going on. | |
| Dec 5, 2010 at 17:11 | comment | added | Pavel Radzivilovsky | @marek Lookup "Impossible necklace game" and others, technology you can actually create and use with this second-best-to-nonlocal-communications feature. | |
| Dec 5, 2010 at 12:34 | comment | added | Marek | Quantum theory is not non-local (and I am not really sure what you mean by that intergalactic invasions, @Pavel)! This could be put as another misconception stemming from EPR paradox. What EPR (or rather Bell's inequalities) say is that quantum theory is either non-local or incomplete (in a sense of absence of hidden parameters). We have good reasons to think it is local (e.g. QFT has to obey locality if it is to make any sense) so what these experiments actually concluded is that there are no hidden variables (i.e. QM is not just statistics). | |
| Dec 5, 2010 at 10:57 | comment | added | iii | Alright, then let's put it this way if you prefer. It's annoying that people think you can communicate faster than light using non-local features of quantum objects. (I'm referring to no signalling theorem) | |
| Dec 4, 2010 at 22:55 | comment | added | Pavel Radzivilovsky | Actually, there is a proper term. It's called "non-locality". | |
| Dec 4, 2010 at 22:54 | comment | added | Pavel Radzivilovsky | But this is really subtle. While it is certainly not communication, there should be a term for "just a little less than" passing information. You can do useful things, plan better intergalagtic invasions, etc with quantum engantglement which without it would require faster than light communication. | |
| S Dec 4, 2010 at 16:24 | history | answered | iii | CC BY-SA 2.5 | |
| S Dec 4, 2010 at 16:24 | history | made wiki | Post Made Community Wiki |