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Feb2313 08:40 AM
ZapperZ

1 
37,491 
The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...

Dec3107 02:06 AM
jtbell

0 
37,226 
I've read in a couple of different books that the similarities between acceleration from gravity and rockets or...

Nov611 11:19 PM
pervect

11 
1,870 
There are several measures of distance for a free falling observer in a Schwarzschild solution.
I think it would be...

Nov611 12:22 PM
Passionflower

0 
504 
The relativistic relativistic energy–momentum relationship is:
E^2 = \left(pc\right)^2 + \left(m_0c^2\right)^2
...

Nov511 04:42 PM
atyy

7 
1,469 
 http://www.physicsinsights.org/glossary.html
I'm often unsure whether people are using "frame" to mean a chart,...

Nov511 06:22 AM
Rasalhague

4 
1,719 
is \overline{\Psi} γ5 \partial2 \Psi Lorentz Invariant? How does this term transform under Lorentz transformations?...

Nov411 08:17 PM
clem

3 
884 
Through my mathematical fumblings, I think I have found a metric which gives a solution of the geodesic equation of...

Nov411 06:05 PM
Matterwave

2 
950 
I propose an explanation of the special relativistic time dilation and calculation of its factor in terms of the...

Nov411 01:41 PM
Alexroma

28 
3,865 
Hello!:
My name is Camilo, i want answer one question about of special relativity, in Landau volumen II.
the...

Nov411 06:59 AM
lalbatros

3 
1,215 
I'm not sure whether this question should go here or in the beyond the standard model forum...but I'll post it here...

Nov411 02:49 AM
Phrak

3 
1,004 
I've been browsing through MTW recently and I found something that puzzles me:
They claim that if you have two...

Nov411 02:22 AM
Phrak

9 
1,039 
A body moves at 0.9999 c, in my FoR i have placed two devices one light second distance apart. As the body passes...

Nov411 01:26 AM
ghwellsjr

5 
1,117 
If Einstein's theories are correct, specifically about objects approaching the speed of light and their mass...

Nov311 07:29 PM
T1987a2T

9 
2,045 
Hi All! I found discussions on this here while researching the subject to see if anyone else has attempted to explore...

Nov311 07:25 PM
D H

12 
1,176 
I was watching QI http://www.youtube.com/watch?v=gU7McFm_cKQ&t=7m09s and prof Brian Cox said that time runs roughly...

Nov311 06:08 PM
mrspeedybob

60 
5,943 
Hi, I wonder if anyone can answer my question please.
I think I understand the basics of relativity and I know that...

Nov311 03:48 PM
jtbell

6 
850 
This thread has caused me to question my assumptions.
If a target of observation is moving at relativistic...

Nov311 01:25 PM
DaveC426913

19 
1,947 
I would like to ask if anybody knows about some analysis of this part in Einstein's derivation of SR where he gets rid...

Nov311 03:38 AM
zonde

9 
1,724 
So I had my hand held for the derivations for the transformations of length and time in special relativity, and I...

Nov211 10:10 PM
nhmllr

2 
913 
Hello
Can some one tell me where to find something about the transformation properties of an ndimensional delta...

Nov211 06:49 PM
facenian

0 
1,282 
The Reissner Nordstrom metric considers charge apart from mass in its composition. Both charge and mass appear in the...

Nov211 05:25 PM
George Jones

22 
2,390 
On the Wikipedia page on Schwarzschild coordinates...
http://en.wikipedia.org/wiki/Schwarzschild_coordinates
...

Nov211 09:49 AM
Bill_K

1 
909 
Can you give me some "real life" examples of simultaneity?
For instance I know the one about the train and the...

Nov211 08:11 AM
BruceW

115 
8,530 
Hi,
Not sure if this is the correct forum for it. Pls move if not.
I've read and heard several times about...

Nov211 06:09 AM
Chalnoth

30 
3,123 
Suppose I have a disk that is 100,000 km in diameter. I attempt to rotate it at 1 revolution per second.
Am I...

Nov111 09:57 PM
DaleSpam

5 
1,100 
I see that it is \sqrt{g}d^{4}x but I'm not sure why it needs to be multiplied by the square root of the...

Nov111 06:34 PM
pervect

4 
1,307 
Hello, Does a spinning mass warp space time differently than a non rotating mass? Is the generated gravitational...

Nov111 06:13 PM
pervect

2 
1,001 
Hi all!
When we talk about the Einstein Field equations.
What do we mean with "extremal proper time" or "extremal...

Nov111 06:12 PM
pervect

2 
1,741 
Hi, Does a spinning mass affect the spatial/time fabric differently than a non rotating mass?

Nov111 06:02 PM
Bobbywhy

3 
1,064 
Hello,
I am interested in what would happen if a photon became nested inside the Lagrangian point of a binary black...

Nov111 05:56 PM
pervect

7 
2,587 
For fun, I'm writing a simple special relativity simulator with a much smaller speed of light so that relativistic...

Nov111 03:44 PM
expwnent

6 
1,325 
Is there a spacetime which is timelike and spacelike complete but null incomplete?

Nov111 10:10 AM
martinbn

2 
720 
As far as I know all light speed measurements done using light sources that utilized electrons. The nominal light...

Nov111 07:02 AM
DaleSpam

6 
1,382 
Newtonian physics correctly predicts that a planetary orbit will be an ellipse and general relativity correctly...

Nov111 04:03 AM
A.T.

16 
2,367 
Hey
Read this article yesterday: http://www.physorg.com/news/201110naturelawsvaryuniverse.html
If the...

Oct3111 07:14 PM
StevieTNZ

2 
851 
Hi,
Let T_{\alpha\beta} be the stressenergy momentum tensor. What does g_{\alpha\beta}T^{\alpha\beta} mean? I...

Oct3111 09:01 AM
jfy4

3 
1,189 
I'm learning electrodynamics and one of the speakers I'm learning from said that when faced with the incompatibility...

Oct3111 08:54 AM
arunbalajeev

26 
6,719 
To detect gravitational waves, we set up some probe masses in laboratories far from each other and measure distance...

Oct3111 12:24 AM
pervect

2 
1,629 
In Modern Quantum Mechanics, Sakurai say that at quantum level the gravity is no more geometrical because the...

Oct3011 11:37 PM
atyy

5 
1,684 
I am reading a paper and the authors read the tt component of the metric from the line element ds^2=f(r) as ...

Oct3011 06:27 PM
George Jones

1 
836 
I remember reading a long time ago that there was a straightforward (but operationally difficult) way of constructing...

Oct3011 02:52 PM
Matterwave

1 
822 