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Feb2313 08:40 AM
ZapperZ

1 
42,394 
The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...

Dec3107 02:06 AM
jtbell

0 
42,038 
any body can give me some material about Palatini forms of GR please, thank you!

May2908 05:18 AM
xiaomaclever

0 
1,068 
From Bergmann chapter 8.Please show that (see at Fig. below)....thank you.

May2908 03:54 AM
supakorn

3 
1,158 
Hi,
I understand that EM fields have energy and they travel at c. Light is an EM field so it travels at c as well....

May2808 11:39 PM
worwhite

9 
1,217 
Can someone tell me how much does a light ray bend when it passes over the surface of the densest star known?
Is...

May2808 05:16 PM
Ulysees

2 
4,677 
Please tell me if it is possible to derive the formula which accounts for the Lorentz contraction from the invariance...

May2808 12:19 PM
DrGreg

30 
8,672 
Quite often the explanation to the twins paradox is stated as acceleration breaks the symmetry or one twin feels...

May2808 11:12 AM
RandallB

63 
5,742 
Hi All,
Can someone tell me what is meant by time & space being "continuous" as opposed to "discontinuous"? What...

May2808 07:09 AM
flatguy

13 
4,484 
This is still rather new to me so please pardon my ignorance. My introduction to tensor differentiation involved only...

May2808 04:46 AM
snoopies622

12 
4,727 
If I want to consider the velocity of distant receding galaxies which may be receding at velocities close to the speed...

May2708 11:08 PM
duordi

6 
1,323 
I have been roaming around threads on PF and there are certain things on which there is no consensus. I would...

May2708 03:07 PM
RandallB

21 
2,468 
Based on the quote below and the link to Wikipedia, I believe the implication is that gravitational redshift will...

May2708 11:11 AM
mysearch

70 
7,928 
Can a 4dimensional manifold with the Schwarzschild metric be embedded into a flat manifold of 5 (or more if...

May2708 10:14 AM
shoehorn

14 
1,970 
Hey I have done a few google searches, and I do not have a relativity book to let me know what the equation for time...

May2708 10:09 AM
shalayka

12 
2,502 
Is there any free online tutorial which completely explains General Relativity without concept of Tensors?

May2708 09:22 AM
pmb_phy

2 
3,749 
Trying to understand black holes as much as possible without the difficult math....
I gather that matter  or...

May2708 04:26 AM
HarryWertM

0 
1,030 
1. How would a general relativist explain why an object falls towards the earth?
2. Is it correct to say that it is...

May2708 04:22 AM
cristo

4 
1,429 
This is related to this thread here. To make responding easier, I have marked questions in red. I have tried to...

May2708 02:00 AM
neopolitan

8 
1,904 
I'm curious about how people here view Einstein's prescription for determining simultaneity in an inertial frame, and...

May2708 12:26 AM
Ken G

152 
17,480 
Since SR physics has considered motion strictly as the separation of bodies,
no longer can a body move through space...

May2608 07:48 PM
Chrisc

45 
3,043 
Hi,
I am not exactly sure how to present this question. Even thinking about it creates some confusion,so I will...

May2608 07:18 PM
tinytim

1 
4,697 
(This is probably answered somewhere, but I couldn't find it, I'm kinda new. >_>)
So, say I was able to travel at...

May2508 04:26 PM
pmb_phy

9 
3,967 
What is the meaning of the curvature scalar (R) in GR? More precisely, what is the meaning of it's evolution? Why when...

May2508 04:02 PM
pmb_phy

11 
2,770 
Doran/Lasenby define a proper interval as:
\delta \tau = \int \sqrt{\frac{dx}{d\lambda} \cdot...

May2508 11:13 AM
Peeter

8 
2,369 
Hello.
If you were far away from a small black hole, and shot (for the sake of argument a bullet) with such precision...

May2508 10:51 AM
Jorrie

12 
2,166 
relativity
LC=length contracted or length contraction
TD=time dilated or time dilation
LOS=loss of simultaneity ...

May2508 01:28 AM
granpa

0 
1,363 
We know what is twin paradox is, and also why it is not a paradox, but my question is, "if we can not define absolute...

May2408 10:16 PM
Al68

124 
10,015 
The wavefrequency relationship is as follows:
f = v / \lambda
Therefore:
v = \lambda * f
The de Broglie...

May2408 10:16 AM
lbrits

8 
1,469 
suppose we have a stationary observer 'A' at the origin. at t=0 rockets 'B' and 'C' pass the origin moving at...

May2408 08:50 AM
DaleSpam

1 
1,107 
(This could be a dumb question, but in any case I'll be happy if the answer is simple)
I understood that the path...

May2408 05:51 AM
jostpuur

3 
1,182 
a lot of transformation laws have c in them. the speed of light, however, depends on the medium ( c' ) and is...

May2408 04:12 AM
granpa

1 
3,590 
If you could travel at the speed of light in a rocket ship then you could still walk around in that rocket ship...

May2308 05:05 PM
super_kangaro

10 
1,675 
What is the relationship between gravitational redshift and phase velocity?

May2308 08:53 AM
redtree

0 
1,078 
Given a Schwarzschild BH. A neutron fall into the BH. The neutron having non zero magnetic moment will carry a...

May2208 07:07 PM
lbrits

1 
1,328 
There's one of the paradoxes with SR that I've never actually seen an answer for.
There is a man on a train...

May2208 03:05 PM
Doc Al

10 
1,839 
The Light Speed has been proved to be around 300.000Km per second.
So, Before continuing to expose my real thread, i...

May2208 12:31 PM
Doc Al

15 
1,842 
I need to know the correct expression for the Lorentz force on a relativistic particle in an EM field, in cgs units,...

May2208 12:18 PM
Jonathan Scott

4 
2,333 
Hi All,
I understand that nothing can go faster than light in a vacuum. What about the velocity of material...

May2208 10:32 AM
nicksauce

1 
965 
Sorry to create another post with the twins' paradox as a central issue but I would like to explore one issue involved...

May2208 06:05 AM
DaleSpam

8 
1,621 
Hey, I was playing around with Gamma and plotted it as shown in the attachments. I noticed that the area swept out...

May2208 05:01 AM
A.T.

10 
1,667 
A rocket is preparing for journey from Earth to Alpha Centauri. The Earth and Alpha Centauri systems are at rest with...

May2208 03:33 AM
Ookke

9 
2,384 