jacob hunter! Posted April 24, 2007 Report Posted April 24, 2007 was watching a movie about it in science class. Was very interesting. I can't wait till we have technology that is advanced enough to see threw corks. Hopefully the stings are there.
jacob hunter! Posted April 24, 2007 Author Report Posted April 24, 2007 www.stringtheory.com or http://en.wikipedia.org/wiki/String_theory
ESCANDAL0SA Posted April 24, 2007 Report Posted April 24, 2007 i read the first couple of sentences then stopped. i was never good at physics, it's all complicated lol.
»Admiral Kirk Posted April 24, 2007 Report Posted April 24, 2007 I prefer Quantum Entanglement personaly ^^. In particular the possibility that it will allow instananious communication between any two points regardless of distance, or possibly even time travel ^^. String Theory is more about math than about practical application, its about unifying physics with quantum physics. Both observable, both verifyable, but they tend to disprove one another if compared using any of our current rules. Very interesting indeed ^^.
»doc flabby Posted April 24, 2007 Report Posted April 24, 2007 Personally I think both theories will subsequently be proved wrong. Or amalgamated into one. If anyone rembers 19th centuary phycics, scientists argued light was a wave some people said a particle. As it turns out the real answer was it was both, but not quite in the way either group invisaged it. Both groups i think in the end claimed credit and said they were right all along....
»Admiral Kirk Posted April 24, 2007 Report Posted April 24, 2007 In essence both groups are likely right. I say likely though, because its actualy still in debate what form light actualy takes. The fact that it can be observed to have propertys of both a wave or a particle depends entirly upon which effect you are activly looking for. This of course touches on quantum theory, namely that by observing any element in the universe you actualy change that element. In other words its impossible to observe something without interfering with it and thus contaminating your results by some small degree. This is the principle that quantum encryption relys on. And one of the things String Theory attempts to explain. It may turn out that in its natural state light is a wave and only reverts to a particle when being observed for particle like characteristics. What it basicly came down to is that if we realy want an answer to that question we needed to quantify the effects that observation has on an object in the universe, and thats where String Theory comes in, or at least one of the many places it comes in. If they can ever stop making rookie mistakes in unit conversions with the CERN collider, we might have a chance of unearthing some of these mysterys ^^.
jacob hunter! Posted April 24, 2007 Author Report Posted April 24, 2007 In essence both groups are likely right. I say likely though, because its actualy still in debate what form light actualy takes. The fact that it can be observed to have propertys of both a wave or a particle depends entirly upon which effect you are activly looking for. This of course touches on quantum theory, namely that by observing any element in the universe you actualy change that element. In other words its impossible to observe something without interfering with it and thus contaminating your results by some small degree. This is the principle that quantum encryption relys on. And one of the things String Theory attempts to explain. It may turn out that in its natural state light is a wave and only reverts to a particle when being observed for particle like characteristics. What it basicly came down to is that if we realy want an answer to that question we needed to quantify the effects that observation has on an object in the universe, and thats where String Theory comes in, or at least one of the many places it comes in. If they can ever stop making rookie mistakes in unit conversions with the CERN collider, we might have a chance of unearthing some of these mysterys ^^. Gamma rays don;t affect any observation at all I think. Or do they?
jacob hunter! Posted April 24, 2007 Author Report Posted April 24, 2007 ....... way to go off topic buddy.
rootbear75 Posted April 25, 2007 Report Posted April 25, 2007 ....... way to go off topic buddy.you're known to do that.
11___________ Posted April 25, 2007 Report Posted April 25, 2007 I am confused, too high level science.
BoogaBooga Posted April 25, 2007 Report Posted April 25, 2007 String Theory or any other 'grand-unified theory' (M-Theory..etc) will never be proven...The math works out all right, (as difficult as it might be...) however, no experiment can be performed in the real world that would explicitly tell us that these strings exist. At this point, scientists are only beginning to construct experiments that might be able to disprove string theory using particle accelerators and such. That being said, if these experiments don't disprove string theory (or parts of it), then youre back to where you started. The problem with tiny things is the uncertainty principle, meaning that theres inherent error no matter how sophisticated your observing apparatus is..You can only know the precise position of a particle or its precise momentum. Since strings are smaller than any particle that might exist, observing them would be very very difficult or even impossible. As it was said earlier.. its more about the math behind it than anything.. So far, three of the four fundamental forces have their mediating particles. The graviton is the only hypothetical one and string theory would go about proving its existance. Quantum particles (photons, electrons etc..) exibit particle duality. This means they behave as a particle and a wave simultaniously. Certain experiments only work if you treat them as waves, others only as particles and even some experiments give results either way.. Gamma rays are extremely high in energy, whatever material youre observing will most likely emit photo-electons (as a result of the photoelectic effect) and the incident ray will probably end up going through the material. Im not sure how they might be used to observe quantum particles though.. Anyway.. thats enough for now.. If the Sun suddenly dissapeared, would the Earth and the rest of the planets deviate from their orbit at this instant?
Dav Posted April 26, 2007 Report Posted April 26, 2007 irrelivant posts split and sent to wormhole. The aditional dimention idea doesnt sound too unrealistic to me, we have observed and accept other properties that do not fall into our observable sphere such as electron spin. As far as proving something like this goes i dont think its entirly impossible, the maths behind it will need to be refined as the theory grows until its equations can satisfy all the problems they are given, this is probabaly a long way off considering relativity cant even do this yet though (or so some say). I have read a few articles where people want to conduct experiments that allow the detection of strings. I dont see why this wouldnt be possible seeing as they interact with things in our observable dimentions ao we may be able to see their effects or we can made machines capable of picking extra dimentional signals up.
»nintendo64 Posted May 1, 2007 Report Posted May 1, 2007 was watching a movie about it in science class. Was very interesting. I can't wait till we have technology that is advanced enough to see threw corks. Hopefully the stings are there. So i guess you saw Michio Kaku open his big mouth again? I dislike String Theory mostly because of what Kirk and other has said not enough verifiable experiments. Science is about experiments, not just theory. Check this link for more information http://www.physicsforums.com/forumdisplay.php?f=66 Anyway, i don't follow LQG, ST or QED and its variants anymore, what i'm waiting for it's the advanced in photonics for computers, no more waiting for a PC to load, and cannot forget the idea of a quantum computer!. Cheers,Cyclovenom
BoogaBooga Posted May 1, 2007 Report Posted May 1, 2007 Bosonic string theory involves a total of 26 dimensions and m-theory involves 11. Its important to note that the concept of these dimensions is entirely mathematic. There is no way yet to show that they actually exist in the universe...String theory works in the world of math. It has yet to be proved (or disproved) in the real universe. And yes, we might be able to observe 4 dimentions.. but you cant just leave out the 22 remaining ones (or 7). I think its up to the mathematicians to refine the theory to more managable terms, if possible. I mean, math in 3-space is quite complicated.. I don't even wanna think about anything higher.. Although, I'm sure its all very interesting if you understand all the math behind it..
rootbear75 Posted May 1, 2007 Report Posted May 1, 2007 (edited) this one's hilarious:http://xkcd.com/c236.htmlhttp://imgs.xkcd.com/comics/collecting_double_takes.png Edited May 1, 2007 by rootbear75
Dav Posted May 1, 2007 Report Posted May 1, 2007 the thing as said with string theory is that it satisfies the maths but cannot be observed. I think it need some work and the creation of experiments to observe it but it wouldn't be so big if it had no substance.
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