Can Quantum Physics bring about elevator to space and molecular transport  and time travel?Why or Why not?
455124
The answer is a definite Maybe.\nAs for the space elevator, my understanding is that to complete one, we would need an ultrathin, ultralight, flexible material wit a tensile strength surpassing all we have now. Quantum Physics is THE tool for people who design new materials. Without using quantum physics, it would all be simply trial and error.\nTime travel is a very slippery subject and I can't comment on that. Right now we have no idea how to begin thinking about it.\nMolecular transport, as in beaming stuff the Star Trek way?\nI'd say there's a lot of problems with that, but quantum physics is the very starting point. All that happens to molecules is subject to quantum laws. Therefore I don't know if qf can bring those things abot. However, nothing else can.
51835
The physics community thinks not, but that never proved anything. The assumption is that nothing can travel faster than light. The answers are usually along the lines of, "since quantum entanglement happens instantaneously, its faster than light, but nothing can travel faster than light, so its impossible".\n\nThere may come a future theoretical structure in which lightspeed is surpassed under some circumstances, without temporal repercussions, then this assumption does not hold.\n\nI would add that I think its possible, based on an experiment described in Brian Greenes fabric of the universe that he uses to explain that its not.\n\nIts a simple extension of the two slit experiment where, immediately after the slits you use a photon doubler to create two entangled photons for each one passing through the slits. One for each slit. One photon carries on, the other is bent off at 90 degrees using a half silvered mirror and sent a long distance.\n\nIf no measurement is made on this second photon,, the other photons act as waves and you get an interference pattern. If a measurement is made, they act as particles and you get hotspots behind each slit.\n\nMy extension is that, by choosing to measure the photons that travel a long distance, you can instantaneous make the photons produce an interference pattern or not. Such a pattern would be noticable. If the split photons have travelled many light years, this pattern should be formable in a few seconds, so the message is coded in interference / non interference. Much like morse code in dots and dashes.
113800
I hate to admit it, but only one of these theories existed when I was in school.  SHMO is in the realm of computer assisted quantum chemistry that has sprung up in the last few decades.  I'm too old of a dog for this level of stuff anymore.\n\nPlease accept my apologies!
35367
I believe it will be possible. The first application of the development of such technology will be the transportation of mass amount of fluids, and solid materials from one place to another. Granted, these materials will probably be simple materials without complexed molecular structure but, it will be the place that other developement will continue from.\n  The technology is centries into the future if it is that soon. The general idea is simple. Breaking down atomic structure in a trasmitable format, transmitting, then reconstituting teh transmitted. It then is a matter of what atomic partical belongs on what part of the carrier wave of the radio/or microwave transmitter. Another additive to the  complexity, is actually getting the particals on the carrier wave. However, if modern modems can convert digital signals into anolog, and analog into digital signals, then other parts of a "transporter" is a matter of time.\nSide note on this: If it will require the power produced from anti-matter generators, then it should interest all that a few anti-matter atoms had been produced. It took more energy to produce those few anti-atoms then they could produce themselves, but it does illistrate that Star-Trek to Star Wars technologies are not entirely impossible.
251335
It can be "explained" with quantum mechanics. If you can find the movies of the lectures given by Richard Feynmen in New Zealand, there are 4 lectures if I am correct, In the first lecture he explains it very well in Laymans terms.\n\nIt takes a fair bit of explanation so I won't attemp to relate it here.
880133
There isn't a definite boundary line.  A molecule of several atoms can exhibit quantum-mechanical behavior under appropriate experimental conditions.  Of course, the heavier the molecule, the more it obeys classical mechanics as opposed to quantum mechanics.  The "correspondence principle" tells us that at a large enough scale, all processes show classical behavior.
833603
Perhaps, but the quatum effects would make it extremely difficult to measure.\n\nThis is the realm of quantum gravity and is really being researched heavily because there are so many paradoxes between relativity and quantum mechanics.
836806
Are you referencing the time dependency of the Schroedinger equation?  Or are you implying quantization of time?
512226
If there is a quantum for time, it must be on the order of 10 to the minus fortieth power seconds, the time required for the smallest particle interaction between two particles that are separated by the theoretical diameter of the smaller of the two-- in other words, they are already nearly touching. Nothing shorter than that could be measured. Whether time is quantized, that is, whether it goes in discrete steps, multiples of the above unit, we do not yet know.
26371
Actually yes, they are planning a "Space Elevator"\n(Warning, while source below is mostly acccurate, the scientific papers could take years to get through)
630252
Teleportation. We at least have theory on how teleportation could work. If the universe under discussion permits of time machines, then no time machines will be invented. The noted s/f author Larry Niven wrote a couple excellent essays on these topics, which I recommend to your attention. They will provide all the information you could possibly need.
18539
100 years might be a bit quick, but I think this may happen faster than one might think at first.\n\nRay Kurzweil is a well-known predictor of technology trends and suggests that the technology to 'move' a person from their brain to an electronic replica will happen in the not-so-distant future. Once this is possible, the technology needed for interstellar flights will be greatly simplified because any approach to transport a human (as they currently live, in a biological body) would consume incredible resources just to provide an environment in which they could survive.
896110
Actually, the answer is "yes", tho in the earliest stages.  Photon teleportation is old news.  Complete atoms have been teleported, and supposedly last year, the quantum state of an information system consisting of many atoms has been teleported, tho not yet fully verified.  In addition, there are other viable approaches to forms of teleportation, probably the next most promising involving intense gravitational fields, as from wormholes or black holes.  The fact is, there exist no limitation of physics to prevent at least several forms of teleportation - it is basically just an engineering problem, massive though it may be.  Check out wikipedia's article on the subject.
85344
Based on the relativity theory, there are many studies that are taking place to look into the possibility of traversing the time-space continuum.  As far as I know, we're not quite there yet.  But if and when we are, we should be able to tap into the theoritical "worm-holes" to go into different points in space without having to exume too much time.
1026939
Quantum physics underpins everything, but of course you don't need to go that deeply for many practical purposes. For instance, you would not model the architecture of a building at the level of an electron.\n\nBut quantum mechanics is central to understanding and designing all semiconductor devices (not just the newer, esoteric ones), hard drives (which use quantum tunneling), chemicals that require an understanding of the chemical bond (including modelling shapes of biological molecules in the biotech iindustry).\n\nIt is behind MRI scanning, x-rays, digital cameras (a CCD is a fundamentally quantum device), nuclear energy and weapons technology.\n\nIt is essential to cosmology and understanding the stars.\n\nThe list goes on.\n\nAnd no, it is way beyond the status of a theory.
50535
OK, first fo all Mr cliffx has it backwards.  As you continue to acellerate tworads the speed of light time will slow down for you and stay normal for everyone else.  Thus at that speeds you could travel 10000 lightyear in only 1 year, your lifetime, but thousands of years could pass on earth.\n\nIt has been theorized that time travel is posible but you could not simply accelerate to that speed.  Even if we could travel that fast the economical need would be currently beyond what any country has, even if they put all there funding into that one project.  but I am getting off the subject.\nOne theory is to travel into a black hole.  The gravetational field in a black hole is so strong that it has been theoryzed that even time cannot escape.  Thus if we were able to travel into a black hole we could use the captuered time there, so to speak, and transverse the timeline.\n\nThen there are ideas of actually traveling on light waves, lasers, to allow us to travel to the speeds necisary.  Of course then we could only travel to the time of how long that peice of machinery is on.  Also we would have to convert ourselvesinto an electrical signale, data (essicially transport), which would then bring up the promblum of measuring matter without moving it and blah blah blah.\n\nSummery, Yes it is possible to travel through time.  We just do not havet he knowledge and/or technology to do it yet.
362081
Not much;  quantum mechanics is pretty much taken for granted (by physicists, NOT philosophers!) as the framework of almost all of modern physics (but gravity's another story...).  In that sense almost all physics research these days is "quantum" physics.  However, there is still some interesting work being done with phenomena that are distinctly quantum mechanical, such as Bose-Einstein condensation, quantum entanglement, and the like.\n\nI'd just like to point out that in the past 100 years since quantum mechanics was "born", no experiment has been performed whose results are not consistent with quantum mechanics.