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Feb2313 08:40 AM
ZapperZ

1 
37,359 
The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...

Dec3107 02:06 AM
jtbell

0 
37,124 
I'm a relative newbie to relativity (no pun intended  I know you've heard that one too many times), as well as to...

Aug411 10:18 AM
PAllen

58 
3,716 
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 
1,587 
In order to explain the relativistic nature of magnetism, a book shows an example of linear procession of charges:...

Aug411 01:38 AM
cragar

1 
1,216 
On my blog, I am having a continuing discussion on special relativity with another person (we are both amatuers). We...

Aug311 09:38 PM
DaleSpam

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6,599 
Can frame dragging around a black hole induce closed timelike curves (CTC)?

Aug311 07:56 PM
Chalnoth

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1,732 
can twin paradox be solved,if no, what r the difficulties scientist face to solve it?? or is there a solution on it.

Aug311 01:17 PM
pervect

2 
934 
Who’s “spin” is in the EinsteinCartan theory? Source’s spin or the test particle’s spin?
I quantum mechanics, when...

Aug311 12:21 PM
tom.stoer

3 
1,221 
I have been trying to figure this one out for some time now. I have read much on the subject, but it seems to be dealt...

Aug211 10:20 PM
ccm.student

163 
34,687 
can you construct (or if yes, is it regularly done) a Hamiltonian in curved spacetime? If you took a system and moved...

Aug211 06:06 PM
dextercioby

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784 
when we move with light our time is slower and when we move against it then it's slower but what if we move at 99%C in...

Aug211 04:11 PM
harrylin

94 
9,013 
If maths tells us 1 * 1 = 1
and it takes a positive cell to repel a positive cell .....
could in theory a...

Aug211 11:36 AM
Vanadium 50

11 
1,348 
I do not understand if you accelerate a hydrogen atom to 90% the speed of light its mass is greatly increased. Are...

Aug211 11:03 AM
DaveC426913

8 
1,862 
I understand that matter and energy bend space time, yet i am curious as to the level at which it requires to bend it....

Aug211 10:57 AM
rationalist76

3 
1,687 
1) Is it always a given that the spacetime curvature will be flat in a region in which there is no mass?
2)...

Aug211 10:25 AM
Bill_K

4 
1,195 
a situation of twin paradox
one twin alice is moving with 99%C another john is at rest on earth
this means 1...

Aug211 09:18 AM
ghwellsjr

6 
1,035 
I was reading something about the Cartan (vierbein) formalism in GR, in wich the connection is allowed to have...

Aug211 09:03 AM
dextercioby

3 
965 
If a bacteria was travelling through space at the speed of light would the cells
divide at a constant or relative...

Aug111 11:20 PM
rationalist76

3 
1,005 
how is twin paradox resolved in case of no/zero acceleration/deceleration?
two twins one on earth and other on a...

Aug111 01:20 PM
D H

131 
10,046 
There is no clock that will measure time independently of movement. And conversely, nothing ever happens that does not...

Aug111 10:52 AM
time_nerd

104 
8,077 
I didn't know where to post this, but I figured since it has the word "relativity" in my question I would stick it...

Aug111 01:49 AM
ghwellsjr

16 
1,784 
Let us consider the cosmological metric:
{ds}^{2}{=}{dt}^{2}{}{}^{2}{}  (1)
For closed models k is...

Aug111 01:20 AM
Anamitra

1 
516 
In Newtonian physics, the centerofmass of a group of particles depends on the instantaneous positions of the...

Jul3111 02:47 PM
DrGreg

4 
1,130 
Relativistic momentum is a vector, just as nonrelativistic momentum is a vector, right? Part of the relativistic...

Jul3111 02:47 PM
jaketodd

7 
3,882 
V. A. Belinskii and V. E. Zakharov, Integration of the Einstein Equations by the Inverse Scattering Method and...

Jul3111 02:30 PM
Bill_K

2 
1,850 
In classical mechanics, isn't kinetic energy not a Galilean scalar? So the action isn't invariant under Galilean...

Jul3111 12:17 PM
Dickfore

13 
1,823 
two questions,
If one was to create some sort of suspended gravity embraced in a cylinder, and then send oxygen and...

Jul3111 10:02 AM
Vanadium 50

3 
3,273 
Greetings I have been trying to find the orbit of Mercury using the geodesic equations with the Schwarzschild Metric,...

Jul3111 03:10 AM
pervect

1 
752 
When an emwave red shifts due to leaving a gravitational field it loses energy, right? Where does that energy go,...

Jul3011 10:15 PM
bcrowell

1 
642 
Recently, when I was talking with my friends, one of them noted that as an object approaches c, there takes places an...

Jul3011 04:14 PM
WannabeNewton

6 
904 
hello
One of the postulates in SR is that the speed of light in vacuum is constant for all observers. Is there a...

Jul3011 12:18 PM
harrylin

17 
2,412 
if the magnitude of the four velocity vector is always c then it can be rewritten in polar form with 3 numbers giving...

Jul2911 10:01 PM
Chestermiller

2 
3,205 
me: layman's understanding of physics and mathmatics
My (very basic) understanding for this question is that: a...

Jul2911 09:21 PM
Drakkith

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867 
If I move with constant acceleration, say accelerate my car, in mincowski spacetime (flat), will I feel a inertia...

Jul2911 09:18 PM
pervect

10 
1,224 
The proper time elapsed between two points in a timelike geodesic in GR is the arclength of this curve segment.
Does...

Jul2911 06:26 PM
TrickyDicky

14 
1,660 
Recently I've watched a few videos and read over some explanations of time dilation and am quite confused by several...

Jul2911 02:48 PM
nitsuj

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2,123 
I recently started selflearning special relativity. I am having lots of trouble convincing myself about the Lorentz...

Jul2911 01:34 PM
ophiophagous

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926 
There's something bothering me about the event horizons of black holes. The Schwarzchild radius (as I see it) is...

Jul2911 01:22 PM
pervect

5 
1,505 
How I studied relativity, we postulated that a particle travelling at c in one inertial frame travels at c in all...

Jul2911 11:34 AM
Janus

4 
892 
Read about this experiment and the results obtained:
...

Jul2811 10:01 PM
OnlyMe

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869 
sorry to bring this up again, i have just started special relativity and the constancy of c is a bit confusing, i get...

Jul2811 08:43 PM
obnoxiousris

4 
1,352 