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Feb2313 08:40 AM
ZapperZ

1 
42,487 
The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...

Dec3107 02:06 AM
jtbell

0 
42,141 
Are we looking for gravity waves to help prove theories or are there possible practical uses for them? ie would the...

May1508 10:35 AM
robphy

2 
1,246 
Has any reaserch facility in the world developed a way to create gravity waves, sizable ones?
Regards,
Nenad

May1508 08:53 AM
DavidWhitbeck

14 
2,108 
Ok in my class we just started reviewing relativity and I had a really hard time grasping it. My teacher says that...

May1508 07:20 AM
DaleSpam

4 
983 
In GR, what is the energy of a system of two identical bodies rotating around their center of mass with regular...

May1508 05:28 AM
I_wonder

1 
1,763 
With reference to the sketch attached,
if A and B is having a relative velocity of 0.9c,and
B and C having a...

May1408 06:53 AM
DaleSpam

31 
4,266 
Let's say, there are two observers A and B moving with respect to each other with relative velocity v. Now, when we...

May1308 10:31 PM
MeJennifer

6 
2,046 
Here is a simple question.
How can an observer measure length (or length contraction) of a cylindrical Iron rod,...

May1308 02:40 PM
phyti

4 
1,923 
How can we decide which process is causing light to bend near the surface of a star? Gravity is said to cause light...

May1308 01:06 PM
AntigenX

4 
1,562 
There have been some threads on relativistic wheels/balls from the view of a road the wheel/ball is rolling on, with...

May1308 10:01 AM
Wizardsblade

18 
2,915 
Hi,
First of all let me clarify, I understand that nothing with mass can move at the speed of light or higher.
I...

May1308 03:17 AM
benabean

10 
2,405 
How small a box can you confine a photon to before its mass is large enough to form a black hole?
I think you can...

May1208 11:17 PM
yuiop

2 
2,584 
Hi,
it's very interesting, that many parts of special relativity were developed before Einstein by Lorentz, Larmor...

May1208 01:01 PM
peter0302

10 
2,137 
Attached are some notes that I made regarding the relativistic Doppler effect. They are about 4 pages long, and gives...

May1208 11:47 AM
shalayka

0 
2,095 
Dear all,
Following is a problem, I suppose, is related to some controversy called "Dingle's Dilemma", as I read...

May1108 08:59 PM
DocZaius

57 
4,943 
Wiki
If speed susceptible to Doppler's effect. Why shouldn't field since we're so determine they have a speed?

May1108 10:12 AM
russ_watters

1 
809 
Hi I am interested in studying special and general relativity at a mathematically rigorous level, and I need to know...

May1008 04:11 PM
DavidWhitbeck

11 
3,293 
Hello !!!
i would like to know what i should know to move on to the general and special relativity regarding to...

May1008 11:21 AM
robphy

4 
955 
I am trying to clarify a number points regarding both redshift and blueshift in the context of relativity. Standard...

May1008 07:31 AM
mysearch

5 
1,924 
Ok guys,
Explain me this.
In twin paradox, one of two twins, paul and peter, when paul goes for a space ride at...

May1008 06:29 AM
MeJennifer

7 
1,558 
You hold in the palm of your hand a classical particle with momentum
P = (E,cp_{x},cp_{y}, cp_{up}) where cp_{up}=0...

May908 12:52 PM
DaleSpam

12 
1,391 
Does a photon curve spacetime, i.e., produce a gravitational field? Is the degree of curvature a function of its...

May908 08:41 AM
exponent137

38 
12,388 
When we derive equation of motion by variation of the action, we use rules of ordinary differentiation and...

May908 02:36 AM
arroy_0205

8 
2,532 
I just have a question relating to Mass Dilation;
Mass is defined (by the dictionary) as
Now, mass is a...

May808 06:58 PM
DaleSpam

3 
1,357 
Am I right in assuming that Gravity Probe B has proved that the rotation of the earth (@~465metres /sec.) 'swirls'...

May808 02:15 PM
Nickelodeon

2 
1,197 
I just posted about what is termed "apparent superluminal velocity of galaxies" and gave a website of an article...

May808 02:06 PM
RandallB

11 
3,517 
Well, let's say we put energy to spin every particle in an atom. Do spinning them faster have relativistic effects as...

May808 12:20 PM
pam

1 
1,312 
Place equal amounts of matter and anitmatter in a box on a scale. It's a very good box; it's very reflective, and...

May808 09:43 AM
pmb_phy

13 
2,210 
I know that the speed of light cannot be attained in vaccum as by the time of reaching there, mass increases...

May808 05:35 AM
Hootenanny

1 
1,256 
I am looking for an expression for the total energy of a particle of rest mass m_0 that includes kinetic and...

May708 07:54 PM
snoopies622

10 
1,507 
I took a course in special relativity as an undergrad, but am now almost 6 years removed from it and have not retained...

May708 03:56 PM
jtbell

6 
1,583 
Hi all,
I've been dusting off the grey matter a bit, and have a question regarding an example I found used in both...

May708 02:49 PM
sumofprimes

17 
6,054 
Hi!
I am studying special relativity and I still don't understand completely the relativity of time dilation:
each...

May708 02:22 PM
dude222

7 
1,911 
Is it plausable to take into account the speed of the earths spin when calculating tmie dilation for satellites and...

May708 01:31 PM
mogsy182

1 
1,178 
So is it the closer you are to the centre of a body the slower time will go? or is it the other way round. also why is...

May708 12:53 PM
shalayka

2 
1,007 
I got a master degree in physics and I still found that this is difficult to expalin Faraday's law of induction within...

May708 12:36 AM
dude222

3 
4,235 
I posted a simple thread regarding Lorentz transforms, but it has been locked for "staff review". May be because I...

May608 04:41 PM
mitesh9

20 
3,109 
My question is simple. I made a bet with my physic teacher. :cool:
I believe time can contract. When two bodies are...

May608 11:46 AM
DrGreg

29 
3,584 
Can anyone explain me what is physical significance of "Lorentz Transforms"?
That means, apart from the math, how...

May608 03:57 AM
Integral

18 
2,859 
Ok, I'm uneducated in physics and all I know is what I've learned from the internet and a single book "universe in a...

May508 10:49 PM
Chrisc

24 
3,368 
What is Aether supposed to be now days (and in Einstein's day)? Isn't Aether just space and time (and maybe their...

May508 10:06 PM
Ken G

37 
3,084 