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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
1 37,346
The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...
Dec31-07 02:06 AM
0 37,114
. They understand the classical Schwarzchild radius argument for black hole formation. They have bare rudiments of...
Feb29-08 12:36 PM
14 3,364
I was working a problem in a Modern Physics book: Find the momentum (in MeV/c) of an electron whose speed is 0.600c....
Feb28-08 07:39 PM
3 7,950
I am in college and have no formal training in physics, but i really enjoy the field. I was reading about redshift and...
Feb27-08 03:39 PM
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Would the pressure and the gravitational self-energy of a body contribute to both its gravitational mass and its...
Feb27-08 03:34 PM
0 738
I would like to preface this idea by stating that I am a total noob and in no way have any right to be here haha. I...
Feb27-08 03:15 PM
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In the space of Riemannian metrics Riem(M), over a compact 3-manifold without boundary M, we have a pointwise (which...
Feb27-08 02:19 PM
1 1,474
Selleri proposes the following transformation equations x=g(x'-vt') t=t'/g g=gamma. Einstein's clock...
Feb27-08 12:05 PM
10 2,410
I read somewhere that relative speed of light always remains constant. That is there is no difference between relative...
Feb27-08 10:05 AM
12 1,392
Hi there I have a question that has possibly been covered before, however, I cannot find the answer that I seek in...
Feb26-08 08:02 PM
Joanna Dark
50 5,435
Just out of curiousity, what's wrong with the theory that the aether is attached to the earth? It's no more fantastic...
Feb26-08 04:46 PM
12 1,626
If the Ricci-scalar R is constant for a given spatial hypersurface, then the curvature of that region should be...
Feb26-08 03:58 PM
1 1,562
Please tell me if "conventionality of dimultaneity" and "Einstein clock synchronization" are one and the same thing?...
Feb26-08 12:15 PM
4 1,528
I'm embarrassed to ask, but I think this will save me some time... I'm trying to use the condition...
Feb26-08 12:02 PM
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My current understanding of the components of the symmetric stress-energy tensor used in the Einstein Field Equations...
Feb25-08 12:02 PM
0 1,134
Imagine we have two rockets, each with a long cylinder with it spin axis alligned with the long axis of the rocket. On...
Feb25-08 06:01 AM
27 4,230
Hi, I brought this up in physics class a while ago but didn't get a very satisfactory response... A train moving at...
Feb25-08 05:53 AM
4 2,462
So I'm introducing myself to formulas and such. I just am going over time dialation and the Lorentz factor. ...
Feb25-08 12:35 AM
5 1,715
Hello, I am in the process of reading Black Holes, Wormholes & Time Machines and am somewhat confused, even though it...
Feb24-08 11:23 AM
5 2,159
If two black holes with equal mass and angular momentum, but the latter in opposite directions were to collide, they...
Feb24-08 07:55 AM
3 1,695
Theory of Relativity says nothing can exceed the speed of light. My question is: Can any information be made to...
Feb23-08 07:38 PM
5 2,937
I'm just wondering, what mathematics would be required to learn GR? If I'm not mistaken, SR only requires algebra, but...
Feb23-08 04:58 PM
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I have read a number of threads on acceleration and special relativity, but can't find what I'm looking for. I would...
Feb23-08 02:58 PM
10 2,012
I have just read the "Read Before Posting" sticky thread and am wondering. Relativity is a difficult theory to...
Feb22-08 12:54 AM
46 3,682
Is there an invariance relation for angular momentum similar to E^2 = p^2 + m^2 ? How about quantum spin ?
Feb21-08 03:15 PM
1 1,205
Been reading about aberration and two explanations that diverge - classical and relativistic. at speeds much slower...
Feb21-08 03:05 PM
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there are a few things i don't get when it comes to light moving at c from all frames of reference... i mean it makes...
Feb21-08 10:37 AM
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You have charged dust (pressure = 0, charge density/mass density = given constant). I suppose the total...
Feb21-08 08:10 AM
1 1,972
Is there any consensus among experimental and/or theoretical physicists about Tom Van Flandern's ideas about gravity...
Feb21-08 06:46 AM
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In other threads the topic of how the proper time of a clock under acceleration has come up a number of times so I...
Feb21-08 01:49 AM
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Hi, as a highschool teacher I am stuck with the following student's question on time dilatation (SR) which could be...
Feb20-08 05:14 AM
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Just a thought; if indeed electrons transit around the nucleus, shouldn't we see relativistic doppler shifting as...
Feb19-08 02:02 PM
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tattman posted this in a thread and i was curious to know an explanation so i decided to post it in a new thread ...
Feb19-08 01:46 PM
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I have been trying to show that the Einstein ring radius R_e = 2^1/2 to no avail. can someone who knows this show me,...
Feb19-08 06:39 AM
George Jones
1 4,328
Given we have a spherically symmetric gravitational field around a spherically symmetric body of mass M. How can I...
Feb18-08 10:35 AM
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First of all, velocity is a relative phenomenon. When we say velocity of an object is s m/s, it is relative to some...
Feb17-08 07:11 PM
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How do I rewrite Einsteins famous field equation R_{ab} - \frac{1}{2} g_{ab} R = \frac{8 \pi G}{c^4} T_{ab} ...
Feb17-08 05:39 PM
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If T_{ab} = \rho u_a u_b is the stress tensor for dust. How can I show that T^{ab}_{;b} = 0 mean that dustparticles...
Feb17-08 05:28 PM
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I am reading Taylor and Wheeler's Spacetime Physics. I am enjoying it a lot and find it extremely readable but I have...
Feb17-08 05:01 PM
Ed Quanta
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Hey folks, Does anyone know how to get the line element on a torus? The ds^2 term. I want to find the metric...
Feb17-08 04:38 PM
2 2,466
Hello everybody, this is my first post here. I need help with a task in General Relativity. ------- Given we...
Feb17-08 10:19 AM
10 2,938

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