• Quantum Object Teleported 100 Kilometers by Chinese Scientists
    59 replies, posted
[QUOTE=Awesomecaek;35924688]Just like you can't fly, and like you can't break the speed of sound, you can't leave the atmosphere? Like you can't transform one element into another, and like atoms are elementary, and protons and neutrons are elementary, as well? There are always scientifically sound theories for why is something impossible, until somebody proves them wrong.[/QUOTE] There never has been a theory that scientifically proved atoms, neutrons etc. were elementary particles, all of what you named were assumptions that we later had to correct. Up until we saw new phenomena (The black radiator for example) these assumptions were right and applicable within their set and well observed surroundings. [editline]12th May 2012[/editline] [QUOTE=MountainWatcher;35924949]Those are all practical examples, a matter of technology, not theory. And the second row is observation. I don't know much about quantum physics but isn't causality a purely logical concept? As in, it can't be disproved because, by logic, it's already right?[/QUOTE] Yes. And that's exactly how science works. When it comes to certain principles you can not prove they are right, you can only prove that they are not wrong. And that's a big difference. And that's the reason why we didn't dump Newtons Laws the second we proved the theory of Relativity applicable and consistent. Within their well defined boundaries, our current scientific theories are right and universal, future will NOT DISPROVE them but rather expand either the boundaries or find more general, less specialized laws.
This just in, China refining quantum nuclear device.
[QUOTE=FalconKrunch;35924345]But that just the thing, I can't, I don't like it when shit happens without an explanation. Quantum Physics breaks all rules of regular physics, yet it works. Quantum entanglement is weird on two fronts, first, two objects are [B]exactly[/B] the same and somehow connected, second, the changes that happen with one of the objects happen to the other one instantaneously and that just creeps me the fuck out.[/QUOTE] Quantum physics is not arbitrary. It does not break regular physics laws, because Newtonian physics can only be applied to things bigger than atoms, they don't have meaning on a particle level and on bodies near light speed. If we were conscious electrons (now, that would be fuckin cool), you would say that Newtonian physics breaks all rules of the "regular" quantum physics. It all depends on which system you are observing. This is pretty amazing. However, you have to think what could China do with it.
I hope this isn't bullshit.
[QUOTE=Killuah;35924989] Yes. And that's exactly how science works. When it comes to certain principles you can not prove they are right, you can only prove that they are not wrong. And that's a big difference. And that's the reason why we didn't dump Newtons Laws the second we proved the theory of Relativity applicable and consistent. Within their well defined boundaries, our current scientific theories are right and universal, future will NOT DISPROVE them but rather expand either the boundaries or find more general, less specialized laws.[/QUOTE] I'm p sure that's the same thing, mate. Or did you mean regarding a certain characteristic? As in, all A is B, I can't prove this but I can prove it is not wrong when it says a1 is B, a2 is B...?
This is amazing. How does a scientist choose where he wants to "teleport" the photons to?
[QUOTE=McMissile;35925629]This is amazing. How does a scientist choose where he wants to "teleport" the photons to?[/QUOTE] You don't teleport something, it's taking two atoms and putting them into a state of quantum entanglement, there's no teleportation in this case, it's just two atoms becoming bound to each other over distances.
[QUOTE=FalconKrunch;35924209]I've even read up on this and it still blows my mind every single time I read about it.[/QUOTE] snip, ninja'd
This is why I love science. There is so much to be discovered. :dance: Also; Thread Music: [video=youtube;DZGINaRUEkU]http://www.youtube.com/watch?v=DZGINaRUEkU[/video]
[QUOTE=Pierrewithahat;35925652]You don't teleport something, it's taking two atoms and putting them into a state of quantum entanglement, there's no teleportation in this case, it's just two atoms becoming bound to each other over distances.[/QUOTE] Right, that's why I put it in quotes. It's probably way too complicated to explain, but I'm just wondering how the scientists are able to choose which photons they want to entangle.
[QUOTE=Cone;35924248]I don't find it that hard to comprehend. There's a certain point where applying logic to it just stops working because this shit genuinely happens, so it's not like you can argue with it. Basically, the key to quantum physics, as I understand it, is "I don't fucking know, just roll with it."[/QUOTE] Quantum mechanics and string theory are really really abstract to me. I'm reading this book and without any reasoning or buildup it's just like "so it's pretty much unanimously agreed that the entire universe is made of atoms. But atoms, though third dimensional, are made up of little 1-dimensional "strings". I'm like, "what the fuck. How can they be "strings" if they're one dimensional. strings have 2 points, shouldn't that make them 2-dimensional? shouldn't one-dimensional object just be called points?
resonance cascade
As long as they don't cause a resonance cascade or soemthing [editline]12th May 2012[/editline] really?
[QUOTE=Sir_takeslot;35924197]Why do people say stupid shit like this.[/QUOTE] [QUOTE=AceOfDivine;35924448]What's next? China teleports their army into white house?[/QUOTE] That's why, this is a serious threat!
[QUOTE=/dev/sda1;35933017]resonance cascade[/QUOTE] NO, NO, IT, IT'S NOT SHUTTING DOWN
[QUOTE=prooboo;35932945]Quantum mechanics and string theory are really really abstract to me. I'm reading this book and without any reasoning or buildup it's just like "so it's pretty much unanimously agreed that the entire universe is made of atoms. But atoms, though third dimensional, are made up of little 1-dimensional "strings". I'm like, "what the fuck. How can they be "strings" if they're one dimensional. strings have 2 points, shouldn't that make them 2-dimensional? shouldn't one-dimensional object just be called points?[/QUOTE] They aren't really strings. [url=http://www.ted.com/talks/brian_greene_why_is_our_universe_fine_tuned_for_life.html]This[/url] video covers string theory briefly, should be worth a watch.
[QUOTE=prooboo;35932945]Quantum mechanics and string theory are really really abstract to me. I'm reading this book and without any reasoning or buildup it's just like "so it's pretty much unanimously agreed that the entire universe is made of atoms. But atoms, though third dimensional, are made up of little 1-dimensional "strings". I'm like, "what the fuck. How can they be "strings" if they're one dimensional. strings have 2 points, shouldn't that make them 2-dimensional? shouldn't one-dimensional object just be called points?[/QUOTE] A line is one dimensional, a plane is two dimensional. A point has no dimensions.
Ancient chinese secret eh?
[QUOTE=Cone;35924248]I don't find it that hard to comprehend. There's a certain point where applying logic to it just stops working because this shit genuinely happens, so it's not like you can argue with it. Basically, the key to quantum physics, as I understand it, is "I don't fucking know, just roll with it."[/QUOTE] As somebody who's doing a degree in physics at university, I'm gonna have to agree with this. Last year I had this awesome lecturer, guy is a complete legend (figuratively, and at our university, literally). While we were doing the QM and special relativity portion of the physics subject for the semester every now and again he'd pause and go, "is this making sense to anyone?" and if anybody said yes, he'd be like, "wrong! It doesn't make any sense - it CAN'T make sense to you! We've grown up and been surrounded by Newtonian mechanics for our entire lives, this isn't even comparable to what we're familiar with!" And he's right! We can quantify this shit, come up with rules, laws and mathematical models to explain how it all works... but if you try to make sense of it in your head it just ain't going to fucking work. All of this stuff happens on a length scale that we're completely unfamiliar with. To quote Richard Feynman,[B] "[B]I think I can safely say that nobody understands quantum mechanics."[/B][/B]
Personally, I love the many worlds theory. Every possible thing happens in the quantum world, but we only experience one kind of reality in the macro world because reality gets split up into different lines of reality. That's why you only get results in the quantum world when you start measuring, otherwise it's just a haze of possibilities. The moment you measure, you basically roll a big wheel of fortune to decide what's going to happen. Otherwise, everything, every possible option on the wheel is true.
[QUOTE=V12US;35936953]Personally, I love the many worlds theory. Every possible thing happens in the quantum world, but we only experience one kind of reality in the macro world because reality gets split up into different lines of reality. That's why you only get results in the quantum world when you start measuring, otherwise it's just a haze of possibilities. The moment you measure, you basically roll a big wheel of fortune to decide what's going to happen. Otherwise, everything, every possible option on the wheel is true.[/QUOTE] If I remember correctly, the many worlds interpretation is generally disregarded now because it requires some specific physics that we're pretty sure don't exist, I think it's something like everything in the universe would have to be in a state of quantum superposition. Although I'll be fucked if I understand it man, I don't study QM and it's QM, shit's impossible to comprehend.
[QUOTE=Pierrewithahat;35936995]If I remember correctly, the many worlds interpretation is generally disregarded now because it requires some specific physics that we're pretty sure don't exist, I think it's something like everything in the universe would have to be in a state of quantum superposition. Although I'll be fucked if I understand it man, I don't study QM and it's QM, shit's impossible to comprehend.[/QUOTE] Well it also provides a solution for 'why are the physical constants what they are', since they would be different in every universe, for infinite? combination.
You're asking why, that's not a question for science, that's a question for philosophy.
[QUOTE=Jackald;35938342][IMG]http://t3.gstatic.com/images?q=tbn:ANd9GcRfjYJPVkJmp6MA3F2xCgmDMM5dNFhuGadb0B-1S-XHUiUagDJlbzJWaauq[/IMG] Photograph from the experiment.[/QUOTE] If something goes wrong you will need a crowbar to fix it. :v:
[QUOTE=Sir_takeslot;35924197]Why do people say stupid shit like this.[/QUOTE] Because somebody else have 100% unbreakable encryption and us not having it would be a huge disadvantage.
I found photos of one of the scientists. [img]http://halflife.neoseeker.com/w/i/halflife/7/7e/160px-HalfLife2_IsaacKleiner.jpg[/img]
[QUOTE=FalconKrunch;35924345]the changes that happen with one of the objects happen to the other one instantaneously and that just creeps me the fuck out.[/QUOTE] the changes actually propagate at the speed of light... no violation of physics here.
[QUOTE=Mattk50;35940630]the changes actually propagate at the speed of light... no violation of physics here.[/QUOTE] In fact it if you measure both of two entangled particles which are away very very far "simultaneously" (e.g. by utalizing an atomic clock) you can see that the changes are instantaneous. Yet no information is transmitted so special relativity is not violated at any point.
[url=http://www.derekyu.com/images/art/doomguy-big.jpg]Did somebody say teleportation?[/url]
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