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Feb2313 08:40 AM
ZapperZ

1 
41,629 
The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many...

Dec3107 02:06 AM
jtbell

0 
41,279 
The PauliLubanski spin 4vector for a particle in its rest frame is given by Sμ = (0, Sx, Sy, Sz). (Note this is the...

Dec2212 11:35 AM
pervect

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1,013 
I was wondering if the electrons change to Tau electrons when an object reaches close to the speed of light. From my...

Apr2013 06:48 AM
Vanadium 50

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Hey guys. I have a question regarding exercise 6.5 in MTW ("Radar Distance Indicator"). The exercise asks the...

Jan414 01:12 AM
PeterDonis

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I'm trying to follow this proof/derivation in Relativity demystified basically the book is showing transformations and...

Jul2609 08:03 PM
Fredrik

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The Schwarzschild Solution to Einstein's Field Equations for gravity are said to be exact when outside a spherically...

Sep1309 04:02 PM
atyy

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My question is, which photon is the one that first hits the square in the following example
If I had a large...

Jan1110 07:35 PM
Zula110100100

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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

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I am thinking about train paradox here. The only difference between the passenger and the person waiting at the...

May2111 11:38 PM
ZealScience

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1,012 
Hey guys
The lab manual for the class is found here
http://advancedlab.physics.gatech.edu/labs/Muons/Muons.pdf
...

May2213 03:26 PM
piareround

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1,012 
Hi, I'm trying to understand what the nature of gravity is. I know it is a force, and I know that heavy objects tend...

Jun1114 05:32 PM
pervect

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1,012 
I'm not really a physics genius or professor so forgive my lack of knowledge.
I was thinking about Einstein's theory...

Aug410 01:36 PM
Naty1

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So if you were to take the twin paradox, but make it so instead of the ship turning around and going to earth, the...

Nov1810 12:31 AM
John232

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I recently watched a documentary on Albert Einstein that said the inspiration (or epiphany I guess) for the slowing of...

Jul2712 11:15 PM
claytonh4

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Ok, this should be an easy one but it's driving me nuts. When we take the Lorentz transformations and apply them to...

Aug113 04:29 PM
SamRoss

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What I mean to say is that as SR predicts time dilation, do the biological processes also slow down?
Suppose A and B...

Oct1206 09:50 PM
Daverz

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1,010 
I just finished watching a hawkins program about time travel that theorized that the faster an object travels through...

Aug2810 08:18 AM
Mentz114

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1,010 
Two spacecraft in inertial motion have relative velocity .5c. The ships have identical "grandfather" clocks very much...

Mar3011 05:54 PM
pervect

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1,010 
Let me phrase the entire question: How is acceleration equivalent to rest in a gravitational field (without tidal...

Apr313 12:38 PM
DaleSpam

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1,010 
I have just recently began to understand relativity, right now I get time dilation and lenght contraction but I do not...

Jan409 11:02 AM
jtbell

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1,009 
..an example that is commonly used in physics and my response for it.
Is light actually passing him at...

Mar2009 10:47 PM
Janus

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1,009 
In my cosmology lectures they say that a negative curvature gives an infinite space but I was thinking what about the...

Feb1910 07:06 AM
George Jones

3 
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From Box 3.3, p. 85:
Since
S^{\alpha}_{\phantom{\alpha}\beta\gamma} = S(\omega^\alpha, e_\beta, e_\gamma)
...

Aug310 05:20 AM
qbert

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I'm starting a new thread on this because my search of this forum indicates that the most recent thread was in 2006...

Mar2311 08:20 AM
csmyth3025

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\theta_o\theta_s does not vary linearly with changes of v/c.
cos (y+b) = ((cos (y)  x)/(1  x cos(y))) ...

Mar112 02:08 PM
kmarinas86

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Imagine Batman has a new hyper speed Batship that is the shape of his circular bat emblem. The ground has convenient...

Apr1912 10:40 AM
Adel Makram

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While explaining how science works in my biology class my biology teacher said that relativity had been proved wrong,...

Dec1912 03:19 PM
PeterDonis

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Has any experiments been done equal to this scenerio where the twin leaving earth and seeing earth time dilated.. but...

Dec2912 11:02 AM
ghwellsjr

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Dear Friends,
Discussion of the Einstein's Special Relativity clock paradox is often complicated by the role of...

Jul413 11:50 AM
ghwellsjr

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The last paragraph of http://arxiv.org/PS_cache/physics/pdf/0006/0006039.pdf states this conclusion:
See these...

Oct205 05:12 PM
Perspicacious

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Hello all,
I, by no means, fully understand general relativity. I was wondering if one of you experts could help me...

Jun107 04:40 PM
Areid45

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There are many derivations of E=mc2 out there, but did Einstein actually used Minkowski space time for his original...

Aug1210 08:25 AM
Petr Mugver

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let's say a train is traveling at relativistic speed along a straight line to right, and a man is standing in the...

Jan2111 09:05 AM
ghwellsjr

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If you are travelling very very fast in a space ship, are there any visual effects produced by general relativity that...

Nov811 05:39 AM
TGlad

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Hi,
I've read that the speed of light is consistent for all observers, no matter where they are. So, for instance,...

Jan1014 06:20 PM
AlfieD

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In time dilation and length contraction, there is a velocity term.
How do we measure velocity at the first place?

Dec1603 09:35 AM
hemmul

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Does anyone know of a reference (or website) where I can find the Ricci tensor/scalar for a static, circularly...

Nov2404 03:38 PM
big bob

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Let's say we have a ship following a buoy toward earth. The ship and buoy are at rest relative to each other, a...

Jun2106 11:26 AM
RandallB

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Fermat's principle states that light travels the path of stationary time, I've read up on this from several sources...

Jul2910 10:44 AM
azaharak

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Hi,
When we define a manifold, and in particular define what a chart is, one of the conditions we specify is that...

Oct1410 06:30 PM
bcrowell

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Hagen Kleinert, in his book, Path Integrals in Quantum Mechanics, Statistics, Polymer Physics, and Financial Markets,...

Dec2711 10:08 PM
friend

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