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Feb2313 08:40 AM
ZapperZ

1 
42,480 
The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...

Dec3107 02:06 AM
jtbell

0 
42,138 
I have a question concerning the treatment of black holes in General Relativity. As I understand it, the force of...

Dec803 09:48 AM
Ambitwistor

9 
1,717 
From the lights point of reference is it traveling infinitly fast? is it's travel instantaneous?

Dec1705 05:06 PM
michael879

6 
1,717 
Hallo.
A question about the relationship between the formulas found using the Lorentz transform and the invariance of...

Sep1910 08:37 AM
ersteller

4 
1,717 
Hi everyone, I am looking into relativity as preparation for university and I was wondering if anyone could help me...

Aug1311 07:01 AM
jimbobian

4 
1,717 
I have been doing searches on the relativity of time and its relation to the "age of the universe," among other...

Dec711 08:03 AM
Elroch

5 
1,717 
Say we have 2 bodies of m1 , m2 .
The distance between them is
a) r1 Ma=m1+m2
b) r2>r1 Mb=m1 +m2
In...

Sep1407 09:37 PM
pervect

2 
1,716 
I have recently attempted quantifying relativity of simultaneity and I was wondering if my attempt has been...

Jul1212 03:31 AM
harrylin

13 
1,716 
Hi,
I've heard it said that for Schwarzschild spacetimes, then the coordinate 'r' is an affine parameter for radial...

Feb611 04:07 AM
LAHLH

8 
1,716 
Hi. I'm reading some quantum field theory and I'm a bit rusty in my relativistic kinematics. I stumbled across the...

Oct2212 05:36 AM
harrylin

15 
1,716 
If someone leaves on a spaceship from Earth at near the speed of light, the clock on the spaceship will appear be...

Dec1203 09:58 AM
DW

3 
1,715 
i know those type of question are posted every day but it is short:
one twin is on a spaceship and the other on a...

Jul1906 07:09 PM
yogi

16 
1,715 
I am having problems with this presentation of the train thought experiment. I actually think it's incorrect, but I'm...

May210 11:54 AM
Jerbearrrrrr

2 
1,715 
Suppose I hold a pencil by its tip and turn it around 20°, around the axis which goes through the pencil's length. The...

Nov310 09:12 AM
ghwellsjr

16 
1,715 
We say that the uniformly accelerated motion x=gtt/2 is not a relativistic motion because after a sufficiently long...

Aug706 03:02 PM
pervect

2 
1,714 
I was wondering if anyone had an explicit form of the hamiltonjacobi equations for GR.
I had a little attempt myself...

Jan2908 11:16 PM
shoehorn

1 
1,714 
Einstein v. Wheeler's Black Holes
John Wheeler who died earlier this month (13 April) not only coined the term ...

Apr2508 05:32 AM
pmb_phy

3 
1,714 
When you are in a box it is difficult to know the difference between if the box is accelerating in space or you are...

Feb2210 09:10 PM
gonegahgah

18 
1,714 
The example given is as follows : we have 3 space ships(numbered from left to right) placed in space moving at...

Jul1514 01:37 AM
ghwellsjr

7 
1,714 
The gravitational force is zero at the center of a planet, but the GPE is at a peak minimum (most negative). What...

Apr709 10:21 AM
rcgldr

4 
1,713 
Hi there, Physics lovers!!
I've got some questions for you!!
Denoting by
(1)...

Apr2111 01:37 AM
MManuel Abad

2 
1,713 
Is several other threads some arguments depend on what circumstances angular momentum is conserved in relativity and...

Sep1513 10:53 PM
yuiop

17 
1,713 
Hello, I just finished reading special theory of relativity written by Albert Einstein himself. Even though I...

Aug504 08:07 PM
HungryChemist

7 
1,712 
This time I am asking for help on a problem. I think I have an answer for problem 23, part (a), but I would like...

Oct2205 09:48 PM
pmb_phy

6 
1,712 
Here's the paper I'm talking about
http://arxiv.org/PS_cache/grqc/pdf/9702/9702005v1.pdf
It's times like this I...

Jan1408 09:28 PM
CJames

2 
1,712 
Hello All I'm new to the forum and have a question.
I was looking at the time dilation function and noticed that...

Aug1111 05:14 PM
Ossama

9 
1,712 
two identical ships launch on parallel paths r distance apart. the are completely alone ]. once they reach some...

Apr411 11:46 PM
ghwellsjr

9 
1,710 
The subject of time dilations has always fascinated me. Sometimes the thought experiments can get confusing but there...

Nov1011 08:11 PM
nhmllr

4 
1,710 
"Gravitomagnetism is a widely used term referring specifically to the kinetic effects of gravity, in analogy to the...

Aug1012 01:47 AM
pervect

13 
1,710 
I've read that in GR, gravity isn't considered to be a force, or that it's considered to be a fictitious force because...

Sep1307 02:08 AM
rcgldr

5 
1,709 
if the time and distance between 2 events for observer A are t and d then what is the time and distance between those...

Sep2108 12:43 AM
granpa

8 
1,709 
Physics books rarely make the distinction between active or passive Lorentz transformations. The usual Lorentz...

Mar2213 09:39 AM
atyy

13 
1,709 
Can the theory of general relativity be deduced without appealing to
the ideas of special relativity? Quantum...

Jul1004 07:07 AM
einstein_vishnu

2 
1,708 
Forgive me if I'm being naive or if this has been answered before, but, I was wondering if someone can explain to me...

May209 04:02 AM
JesseM

8 
1,708 
I was just rereading some of Hawking's writings, and apparently he is fairly stong supporter of a quantum theory of...

Oct1009 11:44 AM
Jonathan Scott

11 
1,708 
Hi Everyone,
I hope everyone had a very enjoyable holiday season.
Currently I'm developing a short film to...

Jan410 06:56 PM
heldervelez

15 
1,708 
I'm trying to use the equations on this page and I have solved the following. Is it correct?
...

Aug411 03:54 AM
randombill

1 
1,708 
hi, I understand that Tab,b=0 because the change in density equals the negative divergence, but why do the christoffel...

Aug911 01:19 PM
solveforX

3 
1,708 
Why is it that when describing time dilation, we say that the object (the thing observed) slows down relative to the...

Dec1612 06:04 AM
ghwellsjr

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I had 1 year ago a little discussion with DaleSpam about the short Lorentz derivation (triangle) if a photon alone...

Apr1613 06:38 PM
digi99

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This is a thought experiment that best depicts my issue in understanding special relativity, particularly the...

Jul3110 09:53 PM
JesseM

20 
1,707 