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Special & General Relativity

- Dependence of various physical phenomena on relative motion of the observer and the observed objects. Exp. & theo. theories of relativity
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Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:40 AM
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The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...
Dec31-07 02:06 AM
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Hello everyone. I just kicked myself out of the philosophy section of the forums, and came here looking for some...
Nov5-07 07:01 PM
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I ask this question because of conclusions from the following example. Two masses orbit one another. The masses...
Nov5-07 02:46 PM
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if an electron is accelerated closer and closer to the speed of light, will its magnetic field grow forever or will it...
Nov5-07 11:37 AM
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FREE FALL OF BODIES 3-body problem (special case) According to the Newton's Mechanics: Let us...
Nov5-07 09:13 AM
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Okay, so the problem is that I'm supposed to analyze what the world would look like if the speed of light is 88 miles...
Nov4-07 09:42 PM
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Few weeks ago a respected magazine brought some excitement with a story on missing bond between Thermodynamics and...
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Primary Goals of Thread: (1) Eliminate all unnecessary concepts (2) Focus solely on the physics Tom and Bill are...
Nov3-07 10:05 PM
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Has it been shown that observed length contraction that occurs due to high relativistic speeds is any different from...
Nov3-07 09:31 PM
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Hi, I'm trying to show that electromagnetism and scalar field theories satisfy the DEC. I know how to find...
Nov2-07 08:20 PM
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Ok, so I read about a thought experiment pertaining to special relativity in a book somewhere and the experiment was...
Nov2-07 11:06 AM
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Say 2 particles A and B. Particle A is stationary in this inertial reference frame. Particle B is moving with...
Nov2-07 02:35 AM
Shooting Star
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why we do not observe any “lack of simultaneity” when we substitute sound signals for the light flashes in the...
Nov2-07 12:05 AM
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Supposedly nothing can travel faster than the speed of light because this would violate causality and produce...
Nov1-07 10:20 PM
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Time invariance implies conservation of energy. Space invariance implies momentum convervation. What convervation...
Nov1-07 04:07 PM
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A eprint on today's Physics ArXiv: Flat-space picture of gravity vs. General Relativity: a precision test for present...
Oct31-07 12:53 PM
Chris Hillman
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Has Fizeau changed the direction of the water in his experiment? If no, wenn we change the direction of the water,...
Oct30-07 11:27 PM
2 1,600
As an example to demonstrate the relativity of simultaneous events Einstein used the train thought experiment. The...
Oct30-07 06:04 PM
Eli Botkin
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i am a master's student and want to work on general relativity! does anybody have information on the most recent...
Oct30-07 08:53 AM
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what exactly are manifolds? I looked on wikipedia and I am getting the sense that its like n dimensional surface if...
Oct30-07 12:06 AM
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I had a question that I was hoping someone could answer for me. If light passes next to a massive rotating object...
Oct29-07 07:56 PM
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Kinetic energy is 1/2mv^2, and velocity varies depending on velocity of the observer, so does kinetic energy also vary...
Oct29-07 07:09 PM
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Hello, does anybody know a proof of the equivalence (or differences) between the "total mass" integral \int T_munu...
Oct29-07 06:16 AM
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Can somebody explain the reason why the following reasoning is wrong? Considering a source of electromagnetic waves...
Oct29-07 03:04 AM
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Do any theories of gravity exist other than general relativity that are capable of explaining the perihelion of...
Oct28-07 02:28 PM
Chris Hillman
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Suppose that some relativistic field has energy density and momentum density. Integrating these, we get the total...
Oct27-07 05:48 PM
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Now, if I'm not mistaken, from the Lorentz transformations one derives the following equations for time dilation and...
Oct27-07 04:20 PM
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Situation A positive test charge q is moving parallel to a current-carrying wire with velocity v relative to the...
Oct27-07 10:11 AM
3 3,116
My understanding is that in GR the way in which the components of the metric tensor can vary from location to location...
Oct27-07 02:58 AM
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Hello! :) A few questions out of pure interest here that I figured someone on the forum will probably be able to...
Oct26-07 01:06 PM
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In a previous thread, I described a "double potential energy paradox". I allowed the discussions to stray off topic...
Oct26-07 05:11 AM
Jonathan Scott
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Hi, This is probably a beginners question, but ill ask it anyway as it has me confused. I have read quite a...
Oct25-07 11:36 AM
Doc Al
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Today my friend told me a strange theory:when the angular kinetic energy of something is large enough,some of the...
Oct24-07 03:53 PM
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Magnets at the speed of light. I guess that if you propel a (natural) magnet close to the speed of light then...
Oct23-07 03:40 PM
20 2,830
In a text book about relativity, I read that particle accelarators can get to a limit because of the relativistic...
Oct23-07 02:29 PM
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Does anyone know of a good, free special and general relativity software package that would allow me to do things like...
Oct23-07 12:31 PM
5 4,759
I was watching a show on TV that talked about why we couldn't go faster than speed of light because we would gain...
Oct23-07 07:00 AM
18 2,893
I have found the relativistic mechanical index of refraction which I think is n = \sqrt{/ Follow the same...
Oct23-07 03:34 AM
2 1,887
Hi..when light goes from one medium to other medium (like air to glass or glass to air) its velocity changes(either...
Oct22-07 02:24 AM
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I have a of light is nothing but kinetic energy of light which is 1/2mc^2..but we know that E=mc^
Oct21-07 05:47 PM
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My knowledge of astrophysics is purely on a self-interest level (I just read about it on my own because it is...
Oct21-07 04:52 AM
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