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Feb2313 08:40 AM
ZapperZ

1 
40,701 
The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...

Dec3107 02:06 AM
jtbell

0 
40,352 
I thought it would be interesting to show how light moves in a Coke bottle:
fSqFWcb4rE&hd
Is the speed of light...

Dec2711 01:20 PM
Doc Al

2 
1,000 
Hagen Kleinert, in his book, Path Integrals in Quantum Mechanics, Statistics, Polymer Physics, and Financial Markets,...

Dec2711 10:08 PM
friend

2 
1,000 
http://www.youtube.com/watch?v=3AunBigvoY
i would love to witness something like this, i still dont quite...

Jun508 04:37 PM
granpa

1 
999 
What physical meaning can be ascribed to the nondivergence of the Einstein tensor? I find it counterintuitive since...

Jun1108 06:53 AM
snoopies622

3 
999 
according to massenergy equivalent theorem, Regardless of whether the object is at rest or moving, the object of mass...

Apr1510 02:01 AM
astro2cosmos

4 
999 
http://arxiv.org/PS_cache/grqc/pdf/0310/0310002v3.pdf
Can someone explain the following statement on page 2 of...

Jan1312 08:12 AM
Naty1

2 
999 
Given a particular system, how would one construct the stressenergy tensor? I was reading Mallett's paper and the...

Dec3013 02:55 AM
WannabeNewton

15 
999 
there are many small womholes that are continuously created throught time, they may nto remain open for long enough...

Jul205 10:59 PM
pervect

1 
998 
does anyone have any equations for calculating time travel without an accelration close, equal or greater than the...

May1506 11:09 AM
imperium2600

3 
998 
We'll know that the base of special relativity theory is "the light has a constant speed in vacuum".
Time dilation...

Sep1309 05:34 PM
xepma

4 
998 
According to the twin parodox scenario, when a twin goes in a rocketship and it travels near the speed of light and...

Feb410 08:36 AM
Fredrik

1 
998 
Suppose there is a solution to the field equations with the Einstein Tensor = 1:
Gtt = 1
and/or,
Gxx = Gyy =...

Apr1611 09:36 PM
edgepflow

3 
998 
Hello!
I'm trying to get my head around general relativity at the moment...(!), and there's one aspect of it that's...

Apr2411 08:56 PM
JesseM

6 
998 
Is there an equation to figure out how much time would pass traveling light speed for 10 years relative to the person...

Jan2912 11:57 PM
ghwellsjr

3 
998 
What is the reason for not attempting to both generate and detect gravity waves in a laboratory? I mean if Eotvos...

Jan509 11:02 AM
Mentz114

9 
997 
Hi I am curious about a few things i have read about light and would appreciate some help.
First of all to my...

Sep910 10:42 AM
Saw

3 
997 
Hi,
I can't say I've really ever done much relativity but this made me wonder. Imagine we have some frame...

Nov1910 11:58 AM
bcrowell

1 
997 
I would like to ask, how these identities are true
...

Mar1111 04:36 AM
vaibhavtewari

2 
997 
Ok, I know you all probably get a ton of lame questions about time travel so I thought I'd add another.
If I...

Apr2906 12:10 PM
nrqed

5 
996 
Here's something for the phone book's fans to chew on:
Surprisingly, on page #1278, in the index entry "Torsion",...

Nov2706 04:24 PM
Chris Hillman

2 
996 
If I was travelling 60% of light speed in one direction,
and you were travelling 60% of light speed in another...

Dec1707 07:33 AM
Janus

2 
996 
The item of gravitational redshift in the WIKIpedia says that this redshift is referred to the light of others forms...

Jun2009 06:36 AM
fleem

5 
996 
Antide Sitter spacetime has the problem of closed timelike curves, which one can solve by somehow unfolding the...

Sep809 01:48 PM
TomEurope

0 
996 
let's say a train is traveling at relativistic speed along a straight line to right, and a man is standing in the...

Jan2111 09:05 AM
ghwellsjr

3 
996 
Hi...
I have just started using GRtensor....
I realize that the calculations in GRtensor have to be done only...

Jun2311 11:42 PM
krishna mohan

3 
996 
We have two clocks within a laboratory.
We put one on the table and the other in a centrifuge made of glass so we can...

Apr2213 05:45 PM
pervect

5 
996 
Hi all. I'm a runofthemill layman—not a student. I've just developed an interest in physics lately and have been...

Jan2614 10:33 AM
Incognito310

20 
996 
I have read some basics knowledge about General Relativity and I see that it deal perfectly with gravity. But what...

Jul114 08:27 AM
WannabeNewton

6 
996 
From the Cosmic Variance blog
http://physicsweb.org/articles/news/9/9/8/1...

Sep1905 10:32 PM
Sir_Deenicus

1 
995 
ok so i am 21 i am in the military i read some books that had quantum mechanics in it and i immediately became sucked...

Feb409 06:16 AM
Ich

10 
995 
Dear all,
First, please forgive my english, I am French.
In most textbooks on general relativity (GR) the non...

Apr1810 07:16 PM
halcon

3 
995 
Hello.
Is there a way, as for the energy frame, to get the particle frame 4velocity of a fluid from its...

Feb712 06:13 PM
Bill_K

5 
995 
I've been playing with the idea of seeing how far I can get with general relativity without resorting to the learning...

Feb1912 12:27 AM
pervect

1 
995 
Let me phrase the entire question: How is acceleration equivalent to rest in a gravitational field (without tidal...

Apr313 12:38 PM
DaleSpam

12 
995 
Hi, I'm trying to understand what the nature of gravity is. I know it is a force, and I know that heavy objects tend...

Jun1114 05:32 PM
pervect

16 
995 
I'm starting to get (Already am) really annoyed at how it is impossible to find an answer to what gravity is. For...

May2013 10:40 AM
slibbfalusken

11 
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Is it accurate that general relativity may predict nonlinear but not chaotic spacetime?

Jan1409 10:44 AM
Loren Booda

2 
994 
A thought exercise:
You have entangled particles, leave one on Earth and put the other on a spaceship that is moving...

May1109 02:41 AM
ZikZak

2 
994 
If you had two synchronized clocks in two side by side elevators, and one sat on the surface of the earth in 1 g for...

Sep613 02:49 PM
Nugatory

14 
994 
Hey guys. I have a question regarding exercise 6.5 in MTW ("Radar Distance Indicator"). The exercise asks the...

Jan414 01:12 AM
PeterDonis

12 
994 