Relativity
For discussion of problems relating to special and general relativity.
2003 topics in this forum
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I remember a couple months ago watching a nice little show done like a movie about disaster scenarios. There was one where, I think, the guy was going to use a particle accelerator to do something and it exploded and start forming something (I think it was a black hole). Well before they did it the news reporter was talking about a theory of what may happen in a worst case scenario, something about forming particles that start with an S. Can anybody help me out?
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- 5 replies
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Just thought I'd let you all know about the Beyond Einstein webcast. It's part of the celebration of the centenery of the theory of relativity, and it looks like it's going to be pretty good. So enjoy
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Hello everyone, Can anybody help me with my problem - i require a book on Non Euclidean Geometry which contains both the theoretical part of it and the mathematical (geometrical) part too (e.i sums for practice or for better understanding; like there are many textbooks on algebra or on Euclidean Geometry which contains a number of sums). Also, if anybody knows about any wonderful book on M-theory as well (too probably with the mathematics being involved, or even only the theoretical explanation) please do tell me. Thanking you all. bajwa
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Bodies travellin at the speed of light like photons have always been said to be massless, so it suffices for me to conclude that travellin at the speed of light could only be possible if one could attain 0 mass. So wat then is mass? What is the mass of a wave. If Einstein converted mass into energy, couldnt mass be converted to waves. Waves dont have weight, so y cant mass be transformed in to a wave, and solve our problems.
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- 65 replies
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Im currently doing my german coursework on the influence Einstein has had on german and enlish life and if it differs. i would really appreciate it if you guys could let me know your opinions of him and all his work. please let me know your nationality aswell, no names are needed. thanks
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I heard of a theory about how to travel back in time. My sources say it was proposed by Kurt Gurdal in 1948. You would need to spin a disc half the size of the solar system at near the speed of light, then take a spaceship and travel along its transverse axis. If you do this, supposedly you would travel back in time. Is this real science or pseudoscience?
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If my mate is travelling to the sun in his very fast sport rocket sat say .99c, my clock at home will measure his trip at around 8 minutes, but because of time dilation his clock will measure say 1 minute. Does that mean that the distance he travelled from his point of view was 1 light minute rather than 8 minutes. Was his trip actually a shorted distance??
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Experimentalists send a signal, detect its arrival and determine its speed: the speed is (e.g. four times) greater than 300000 km/s. At least that is what the public should know: http://i-newswire.com/pr43033.html http://www.newscientist.com/article.ns?id=dn2796 The Criminal Relativity Cult (CRC) have sanctioned the information on condition that experimentalists should call the signal "Hamlet" and convince the public that, although the signal exists (after all, one sends it and detects its arrival), it nevertheless does not exist. More precisely, the signal should be deprived of any information and then it is clear that if something is deprived of any informatio…
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Einstein and other initiated have always known, except perhaps for a short period after 1905, that the second postulate (of the constancy of the speed of light) is false. Accordingly, while numerous bellicose zombies destroyed the life of anyone questioning the truth of the second postulate, the initiated developed an alternative strategy called "Relativity without c". This strategy, combined with the traditional one defended by zombies and called "Relativity with c", formed eventually the global strategy called "Relativity Forever". Three examples of the strategy "Relativity without c" in action: 1. A. Einstein, "Relativity", Chapter 22. 2. The initiated Tom Rob…
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Bryan Wallace http://www.ekkehard-friebe.de/wallace.htm : "The true scientist must have faith and believe in the scientific method of testing theories, and not in the theories themselves. I agree with Seeds argument that "A pseudoscience is something that pretends to be a science but does not obey the rules of good conduct common to all sciences." Because many of the dominant theories of our time do not follow the rules of science, they should more properly be labeled pseudoscience. The people who tend to believe more in theories than in the scientific method of testing theories, and who ignore the evidence against the theories they believe in, should be considered ps…
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three objects X=earth, Y=space station, Z=space craft The space station Y travels at 0.866c away from earth X, at the space station they launch a space craft Z that is also moving away from Y at 0.866c. now what does earth see: Y at 0.866c Z at somewhere between 0.866c and c From earth point of view this means Z is barely moving away from Y but at Y they see Z moving very fast away in the same way that X sees Y. So how can Z be fast and slow at the same time. The only explanation is that due to the fact that time at the space station Z is going much slower it's only from their point of view that it's going that fast. 1 second on the space station is t…
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our universe constists of 11 dimention. i only knowing the first 4; 1d, 2d ,3 and 4d (time), but a black hole has how many dimentions. 11 likes its theory should guest for thsi universe or.... less. i have a theory that a black hole had fewer then 2 dimensions. thus its power to up so much matter as it tries to reform back to its lower dimension.... so does a black hole have a 4 dimension? can a higher dimension exist if a lower doesn't?
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Des vitesses plus grandes que 300000 km/s ont ete obtenues dans des experiences diverses: http://i-newswire.com/pr43033.html http://www.newscientist.com/article.ns?id=dn2796 Mais les experimentateurs (qui n'ont rien a voir avec la theorie de la relativite) expliquent aux zombies de la relativite pourquoi la theorie quand meme reste valide, et les zombies repetent l'explication trois fois par jour. C'est le principe d'Ignatius de Loyola: "That we may in all things attain the truth, that we may not err in anything, we ought ever to hold it a fixed principle, that what I see white I believe to be black if the Romish Church define it so to be." Une illustrat…
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Einstein et les autres inities ont toujours su, a l'exception peut-etre d'une courte periode apres 1905, que le second postulat (de la constance de la vitesse de la lumiere) est faux. Par consequent, pendant que les nombreux zombies belliqueux ruinaient la vie de chacun mettant en question la verite du second postulat, les inities developpaient une strategie alternative intitulee "Relativite sans c". Cette strategie, en combinaison avec la strategie traditionnelle defendue par les zombies et intitulee "Relativite avec c", a finalement forme la strategie globale intitulee "Relativite pour toujours". Trois exemples illustrant la strategie "Relativite sans c": 1. A. Eins…
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Source: http://physicsweb.org/articles/news/9/11/1/1 What do you all make of this?
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ok , i know T^2 = k*R^2, but wat is K . cans some one explain k to me. its a real complicated one :/
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Inside a black hole - what would it be like? I know once you pass the event horizon you can never get out of the black hole , not unless you can cheat reality anyway. Anyway, I know at the heart of a black hole there is the quantim singularity; the point at which all our laws of physics break down. Does this apply to every law or could there be a set of laws that will work in the heart of a black hole? I have heared about quantum gravity but I can't find much information on it. Also, what about M-theory how would the strings and branes be affected by it? Would they also be oblivionised? How many dimensions does the event horizon cross, does it only extend int…
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I found the coolest calculator on this site: http://www.stardestroyer.net/Empire/Science/Relativity.html If I was travelling at 299,999,999 m/s my relativistic mass would be 820,579 kg (usually 70) and I'd be getting older .000082 as fast as people on earth. try it out lol
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see other thread (delete this one, thanks )
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I was tought that time stops when you reach the speed of light. How so? what I mean is what is time? isn't time just a measurement/schedule. For example, I am waking up at 6am tommorow, that just counts specific measurements on a mechanical clock for a specific amount then it rings. It is a schedule sort of. So how can one say that time stops? If you carried a clock on a space ship traveling at the speed of light, would it keep ticking like it always does? I mean for time to stop, the clock has to stop right? Please clear this up for me, because it all makes no sense. I just believe we are always in the present.
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Non-expert question: I’m trying to understand time dilation and length contraction better within the context of Einstein’s Special Relativity. I found some good descriptions at about.com and on several science forum threads but it seems I came up just shy of understanding it clearly. I thought I had it understood clearly then somehow my understanding got obfuscated again. I’ve heard some great analogies for both time dilation and length contraction. (One being the tilting “1meter stick/ruler” analogy.) EG. Due to the tilt of the ruler (representing a person travelling at very high speed) an observer on the other side of the room might see the meter stick ap…
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- 5 replies
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Question: If mass increases with speed, becoming infinite at c, then does it also follow that at speed of 0, would mass be 0? Now I'm talking about a mass at absolute zero, and velocity relative to (space/time?) of 0. Don't know how that could be accomplished - it's just a thought that's driving me crazy.
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The assumptions discussed here are: 1. Assumption of inertial frames in special relativity (SR), and 2. Assumption of consistent proper time in general relativity (GR), which are both logically imperfect and can be improved to possibly solve most of the mysterious riddles in gravitation and particle physics. At the time when special relativity was developed, there was no better logical definition of inertial frames than an abrupt assumption. Both particle physics and gravitation are based on the Lorentz spacetime defined based on this assumption. But 20th century physics had progressed faster than this assumption and this spacetime definition can keep pace with an…
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When you have the speed & location info at time t from all objects that observer A is seeing. Is it then also possible to calculate what observer B would see at time t? 1) if A and B do not move relative to each other 2) if A and B do move relative to each other Did anyone wrote a 4D program that can calculate what observer B is seeing (matlab?) ----------------------------- some info links about Lorentz Transformation http://hepth.hanyang.ac.kr/~kst/lect/relativity/x146.htm http://home.usit.net/~cmdaven/cmdaven1.htm
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I am actually here to ask a question, i have been wondering, Einstein said if there are two brothers ( twins), and one travels to a distant planet at some speed 2ce that of light, lets say it takes him 2mins( to the traveller), to those on earth he travelled for 5o years, by the time he comes bac he would have aged by 2 mins while his brother on earth would have aged by 50 years. So now, this is my question, is agein a function of TIME
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- 5 replies
- 1.7k views
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