2011-12-26, 15:07 | Link #321 | |||
Absolute Haruhist!
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Age: 36
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From what I understand and from the article I linked, it is stated that they can teleport atom to atom with perfect accuracy in information and their chance of success at this point is 90%. This would mean that they are able to completely replicate every single property of a particle in an entanglement. If an atom is bonded, it would probably entangle with the information of the bond. In this case its possible to entangle whole molecules. Quote:
That's why Ithekro and I are saying we have an assorted storage or pile of particles ready to be entangled anytime into the object we want to 'teleport'. Quote:
To quote him: "One can have no smaller or greater mastery than mastery of oneself." And Van Gogh, famous for his Starry Night, he is actually obsessed with the colour blue, later some yellow, along with spirals. Art is Form and Content, what the general audience normally sees is the Form, its aesthetics and shape, Content is why the artist did it and can be hard to identify. Alot of times artists are simply experimenting and challenging perspectives, it usually results in weirdness that makes people think art is rubbish. These usually are some kind of expression, obsession or self indulgence of the artist and only when they die do people understand the impact of their work. And the pieces that usually sell are those with a nice Form and aesthetics, many times these pieces are made to earn some money to survive. Only when someone is an art enthusiast will they seek out the weird pieces with some kind of deeper context. Of course great masters could always create pieces with great form and content.
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2011-12-26, 19:14 | Link #322 |
Carpe Diem
Join Date: Dec 2009
Location: ||At the edge of finality.||
Age: 34
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This thread is filled with the same misconception on entanglement that has permeated popular culture. It is not teleportation and the only information it transfers is a vague and usually useless detail about state.
Here is a simple way of looking at quantum entanglement: I take two electrons, force them into alignment at spin down, and entangle them (A & B). I then separate them by a distance of thousands of kilometers. If I apply a magnetic field to electron A causing its spin to flip, say into down in the x-coordinate basis, then the electron B, some thousands of kilometers away, will also now be in the spin down state along the x-coordinate. You can upscale this to molecules, if you are god and have powers to override the ever more present chaos as you increase in complexity, but you are never making anything teleport nor are you transferring information (in the common sense of the word). I make changes appear on either end because entangled pairs remain identical. (These changes occur at thousands of times the speed of light.) This is the very simple explanation for this. Currently, it is not believed that any information can be transmitted this way. (Naturally, matter cannot be transmitted in this way either.) And the only way to make this transfer *codes* that you can then turn into information at super-luminal speeds would require you to travel great distances first at less than super speeds, making the entire en devour relatively pointless and over such a long time that your quantum states would probably decohere or your particles decay. Effectively, what you could make, is a very complicated and fast telegraph but in order to use the telegraph to its maximum efficiency you must first walk it to Mars. The basis of the information holding meaning must first travel, as per GR rules, at less than the speed of light. (LHC neutrinos not withstanding.) (I'm of the impression that many people are confusing Quantum Teleportation with real Teleportation. Quantum Teleportation does not move the original target nor does it *create* a copy. It forces the entangled pair to take on the value of the original that was changed. This is what I said above, you can look it up on the wiki.) Building anything out of this remotely would be nigh impossibly hard. I cannot just push molecules together and expect their distant counterparts to also come together because if it worked that way I would never have been able to separate the particles to begin with. You are also not transmitting the stimulating force (say my hand pushing) but only the end result on the state of the system. State changes aren't going to build you anything. It is chemical reactions or physical interactions that build things but that, in and of itself, may not force a state to change in anything more than its physical location. (And again, if physical location were that tied, I would never have been able to separate the particles. We're talking the teleportion of, generally, purely quantum mechanical variables such as spin, and so you cannot think of this classically. Spin does not generally build anything.) As for time travel, all I've seen thus far is people discussing the Twin Paradox. This is not time travel, this is simply one twin accelerating/decelerating to/from incredible speeds, causing time-dilation to occur as per very basic Lorentzian and Special Relativity rules. There is no time travel in the sense that I'm going back to kill my grandfather (Grandfather Paradox) but just that one person is moving so fast that time has a different rate of change than for someone on Earth. This only goes one way for all of those involved and is not genuine time travel. If you want time travel then you have to face the issues of causality and of light cones (leading into the Grandfather's Paradox). This is not something I study regularly but I can look into it if people are interested. Right, good. Physics. And yes, I am Physics Graduate Student. (But I can get things wrong too!) On an aside, I stopped believing in anything IBM dreamt up when they fell into the Hard AI pithole. Humans aren't special but a linear processor is even less so...
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2011-12-26, 20:50 | Link #323 | |||
I disagree with you all.
Join Date: Dec 2005
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Thanks. That was a lot clearer and more definite than I was managing.
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2011-12-26, 21:05 | Link #324 | |||
Carpe Diem
Join Date: Dec 2009
Location: ||At the edge of finality.||
Age: 34
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2011-12-27, 05:28 | Link #325 | |
I disagree with you all.
Join Date: Dec 2005
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2011-12-27, 09:27 | Link #327 | |
Carpe Diem
Join Date: Dec 2009
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Age: 34
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That really has nothing to do with my not wanting a QM system doing surgery for any valid/scientific reasons though... It's really that, if you think about it, QM is driven by randomness and having it do something so delicate seems to be counter intuitive. Ignore me.
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2011-12-28, 02:53 | Link #328 |
Absolute Haruhist!
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Age: 36
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@Vena
Great to hear from an actual physicist, are you going to be an experimental or theoretical physicist? What is your area of research? Do you think teleportation and time traveling will ever be possible? We're in an era where the rate of scientific discovery is faster than ever before, with neutrinos that seem to travel faster than light and the Higgs boson on the verge of discovery, I think its a good time to explore the possibility of science fiction. I always think that time traveling is exactly what it means, traveling through the dimension of time. If there's a difference in the amount of time experienced between two individuals, to me there is time traveling involved, though the amount of significance is another thing. We already know that speed affects time and even gravity can distort time, these two are commonly brought up as possible solutions to time travel and can be worked out in mathematics. If one can time travel, they can also teleport since they will be moving around space-time in a non conventional way, appearing and disappearing abruptly.
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2011-12-28, 10:23 | Link #329 | ||
Carpe Diem
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As for teleportation, it depends on your definition. Quantum Teleportation (read: not physical movement of something but a teleportation of a quantum mechanical state) has been possible for the last ten years. Physical teleportation is something I'm not too keen on as in I don't know enough to give a real opinion and/or evaluation. But, I'll give you this link on which you can CNTRL+F the word *impossible* to see what I think of *impossible*: Look up impossible. Quote:
There's also no money in the field to explore much of anything sci-fi, a real shame. People don't give a damn about theoretical (or even experimental) physics when all they want is the next iPad or iPhone or iFlyswatter to distract them at every waking moment of their lives. (As an off hand example, our physics classes have been shrinking every year and, this year, is almost non existent.)
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2011-12-29, 18:09 | Link #332 | |
Obey the Darkly Cute ...
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Join Date: Dec 2005
Location: On the whole, I'd rather be in Kyoto ...
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But yeah... not just physics, ALL the sciences, mathematics, etc. are experiencing shrinkage. Part of the reason isn't disinterest so much as knowing the overlords aren't hiring for R&D, applications, etc. anywhere near as much as they used to. So, bust mental ass for 4-7 yrs, incur huge debt and end up with no job anyway (you're overqualified for flipping fries). That's if you want to stay in the US... I advise all science/engineering students to 1-have a passport 2- spend at least a semester or summer intern/research session overseas. 3- Know more than one language. 4-always read the job section in the back of Nature to see whats bustling on the entire planet.
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2011-12-29, 19:25 | Link #333 | ||
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If you want to look at the brain and consciousness through quantum mechanics (at the very least its clear that human brains are not simply classical, linear systems) then you run into No Cloning Theorem & Quantum Cloning. Unless these ideas change (or people and their identities turn out to be nothing more than very fancy PCs), I do not think you can pass on the original person at all but a snapshot of them at one single point in time (the point in time at which you make the observation to copy them), meaning you lose (as per quantum mechanics and uncertainty) all other information about the original person (specifically, their identity beyond a single instance in time*). This similarly precludes many of the ideas of "uploading" your brain/consciousness to computers talk that circles the internet. *Think of it, if you will, as an electron traveling through spacetime without anyone observing it. It has undefined position and momentum and spin, these three terms (for simplicity) define the unknown state of the system of the electron. If I then went to make a clone of that state, I would first have to observe the electron forcing it to either occupy a position, losing all information about its momentum, and knowing its spin. I have lost 1/3 of all of the information about the electron, I know where it is but I have no idea where or how fast it was going somewhere and, once I clone it, I have no way of getting that information back. (Assuming that the electron cannot be its own observer just as much as a human cannot be his own observer beyond internal consistency.) ^Now upscale this to a system the size of a person. You take a snapshot of their mental state at some point in time. You've gained a bunch of information about them, let's call it their position, but you cannot reconstruct from that information their momentum (ie. how they will change). In fact, your original will change immediately after you take the snapshot but the snapshot that you clone will remain unchanging or (given an input) will change in an entirely different way. So in the end and through this very bastardized explanation through QM, you've create two entirely different people. Quote:
I hope that made any sense...
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2011-12-31, 23:27 | Link #334 | |
Obey the Darkly Cute ...
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Location: On the whole, I'd rather be in Kyoto ...
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Actually, I knew all that (my background is in science/engineering) .... my post was meant to be rhetorical shorthand with the "the ethics brigade can charge in now " tagline. But nice post explicitly summarizing the issues.
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2012-01-01, 09:07 | Link #335 | ||
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2012-01-01, 19:46 | Link #336 |
Senior Member
Join Date: Jan 2008
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Inkjet Printers Prepare for War
"Researchers at the Georgia Institute of Technology have developed a prototype
wireless sensor that can be printed on paper or similar material using standard inkjet technology. The device employs carbon nanotubes and can detect trace amounts of ammonia, an important ingredient in explosives. The special “inks” consist of silver nanoparticles in an emulsion that is printed at low temperatures. Scientists also have been able to print antennas that are required to communicate information from the sensor so nearby personnel can be alerted when ammonia is detected. Their work is based on the same inkjet technique that is used to produce radio frequency components, circuits and antennas." See: http://www.nationaldefensemagazine.o...areforWar.aspx |
2012-01-02, 17:44 | Link #337 |
Senior Member
Join Date: Jan 2008
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Japan developing cyber weapon: report
"Japan has been developing a virus that could track down the source of a cyber
attack and neutralise its programme, the daily Yomiuri Shimbun reported Sunday." See: http://www.spacedaily.com/reports/Ja...eport_999.html |
2012-01-02, 18:02 | Link #338 |
temporary safeguard
Join Date: May 2004
Location: Germany
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Oh great, it's gray hats all over again.
The idea of battling virus with counter virus is as old as the first computer virus itself. Certainly older than me. And we have long before come to the conclusion, that it is a very bad idea. How they got that funding is beyond me. Maybe this is supposed to be used in a war, where collateral damage is an afterthought? |
2012-01-03, 11:39 | Link #339 | |
Takao Tsundere Cruiser
Join Date: Oct 2008
Location: Classified
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2012-01-03, 11:53 | Link #340 |
temporary safeguard
Join Date: May 2004
Location: Germany
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Our cats would be terrified, but it is awesome.
Btw. is it wrong that I kinda expected him to remotely grab her boobs? Maybe it's just the engineer in me, thinking of the obviously best use for that besides scaring cats. |
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