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Feb2313 08:40 AM
ZapperZ

1 
42,742 
The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...

Dec3107 02:06 AM
jtbell

0 
42,387 
Last week in physics we were learning about special relativity and we got the equation p=λmv. When writing the...

Mar311 07:01 PM
DRC12

9 
1,907 
in my simple opinion the red shift is caused by the increasing distance of the light source and the light destination....

Mar311 03:03 PM
Naty1

2 
1,107 
In
Appendix I
Simple Derivation of the Lorentz Transformation
http://www.bartleby.com/173/a1.html,
in...

Mar311 10:31 AM
RobikShrestha

0 
788 
Ok i'm a physics layperson, who has a question about relativity which i was hopging someone could answer in a way that...

Mar311 09:10 AM
DaleSpam

19 
2,196 
Suppose I am standing on the earth surface and observing a rockhet of very high speed then i will see the lenght the...

Mar311 07:58 AM
HallsofIvy

2 
1,068 
Is there a way to derive Lorentz transforms by knowing just Galilean/Newtonian relativity (adding up velocities) and...

Mar311 07:48 AM
RobikShrestha

2 
830 
I wish I could calculate the contraction:
gabgab
I wish someone could show me how to get n!
...

Mar311 02:06 AM
yicong2011

4 
2,873 
Just joined today, so, hi everyone!
And please, forgive me and point me in the right direction if this has been...

Mar211 10:45 PM
Drakkith

5 
830 
I was reading C. Schiller's text on relativity and he gives an expression for the ratio frequencies of two observers...

Mar211 09:54 PM
Jilvin

2 
2,386 
I wish I could see more materials on null electromagnetic field. Unfortunately, I cannot find enough original research...

Mar211 11:58 AM
yicong2011

0 
444 
Is length contraction an assumption which is verified experimentally or can it be proved? If it can be proved, how to...

Mar211 08:00 AM
RobikShrestha

10 
1,927 
Hope this is the right forum as I am having a little trouble finding my around the site.
Just a thought and I dont...

Mar111 11:23 PM
DaleSpam

4 
1,406 
So how do charged black holes work?
If its photons that are the carriers of the electromagentic force, and photons...

Mar111 07:13 PM
Naty1

1 
1,191 
Santosh Devasia managed to get a kook paper past the referees at Eur Phys J: "Lorentz violation in highenergy ions,"...

Mar111 04:38 PM
DaleSpam

3 
861 
Hello,
while solving bending of light problem, where I shoot a light ray from one tower to other. How much light...

Feb2811 08:00 PM
vaibhavtewari

7 
1,071 
Hello, this should be an easy one to answer, hope it's in the right place.
I'm going through Sean M. Carroll's text...

Feb2811 02:17 PM
wduff

2 
1,531 
Hello! need some help with length contraction.
So according to lorentz transformation we got
I dont know how to...

Feb2811 07:29 AM
DaleSpam

10 
3,299 
Are there any graphs that depict the amount of time dilation that occurs by the fraction of the speed of light for the...

Feb2811 07:13 AM
gonegahgah

8 
2,506 
Here is my question, starting from a suggested experiment that reminds a known example that Einstein gave about...

Feb2811 06:59 AM
PhilDSP

204 
18,520 
Do all observers agree on the age of our Universe? If not is there some measure they do agree on?
Thanks for any...

Feb2811 06:24 AM
Spinnor

19 
2,038 
In an earlier thread, I asserted that a rod has one true length, its rest length. If so, then the shorter coordinate...

Feb2811 03:22 AM
harrylin

242 
24,302 
Okay I am a high school school student trying to learn the components of relativity, but i can't find anything that...

Feb2711 11:57 PM
JesseM

8 
1,766 
Given that we have the one form A we can get the F=dA, and I see how dF=0 and d*F=J, give maxwell's equations. But if...

Feb2711 11:48 PM
haloempty

0 
711 
Scenario: Lets say I lived on planet A (which was massive), which orbited planet B (which was also massive) so closely...

Feb2711 03:13 PM
Algaib

3 
1,048 
Hi,
I've been trying to work out exactly why the t=const and r=const lines look like they do in the Minkowski...

Feb2711 11:24 AM
bcrowell

3 
1,063 
I keep reading that an observer will find the clock moving relative to him to be slower than his own local clock. But...

Feb2711 10:34 AM
Naty1

4 
1,674 
I was pondering about the following cases and I am wondering if gave a correct description for each case. Do tell me...

Feb2711 01:09 AM
GrayGhost

12 
1,769 
Hi, I have two questions dealing with general relativity:
assume that we want to use a manifold with torsion, an...

Feb2611 09:41 PM
Mentz114

2 
700 
I'm not a physics student but have always been interested. That said my knowledge is very slim. I've always wondered...

Feb2611 09:09 PM
icester

7 
1,574 
Forgive me for any misconception I may have, but as a first year university student, I know that any force alters...

Feb2611 02:17 PM
1a2a4a8a16a32

2 
821 
I have two metal bars positioned in space so that, when viewed in the xyplane, they intersect each other at some...

Feb2611 11:27 AM
Waxbear

7 
952 
As long as there is any energy/mass at all in our universe, time will always be in a "slowed" state. So, let's say we...

Feb2611 03:42 AM
John232

9 
1,039 
For the MMX, the speed of light is measured isotropically at c in free space regardless of the frame, so gives a null...

Feb2511 05:00 PM
gravuniverse

22 
1,825 
Hi,
I am wondering what are the transformation laws (Lorentz transformations) for a general metric, if they exist.

Feb2511 04:29 PM
jfy4

39 
4,810 
I would like to know how light cones work, Everytime I make a post it gets locked before I can learn something. I...

Feb2511 04:07 PM
d.smith292

5 
878 
Can anyone explain to an ignorant layperson, with as little mathematics/geometry as possible, whether field lines in...

Feb2511 07:55 AM
Feeble Wonk

1 
573 
So I am 100% sure I am missing something here, but can someone explain to me why this doesn't work out?
Say I go to...

Feb2411 08:50 PM
JesseM

10 
1,295 
Let a clock A be at rest in an inertial frame and let a clock B rotate around it with constant velocity and constant...

Feb2411 04:10 PM
JesseM

3 
1,059 
This is a conversational post, I am looking for others opinions on the diagram below related to time travel. If it is...

Feb2411 03:46 PM
JesseM

1 
4,125 
Hi!
A google search for my upcomming question lead me to this page, and I am delighted to find an online community...

Feb2411 01:08 PM
JesseM

1 
768 