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

Dec3107 02:06 AM
jtbell

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42,119 
Before posting anything, please review the Physics Forums Global Guidelines.
If you are seeking help with a...

Feb2313 08:40 AM
ZapperZ

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42,470 
http://www.arxiv.org/abs/quantph/0311049
"Black Holes and Information Theory"
popularly written, at least for...

Nov1703 03:57 PM
nonunitary

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To anyone smarter than myself(which should be a lot of people here):
It's clear that relativity neccessitates that...

Nov2003 09:25 AM
Ambitwistor

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1,660 
http://www.lns.cornell.edu/spr/200310/msg0055587.html
I think its a stroke of good luck that the SSC was cancelled...

Nov2103 08:49 AM
wolram

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3,041 
I am pretty new to physics in general. From what i've gotten so far, relativity states that time increases (or the...

Nov2103 05:43 PM
Phobos

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How I understand how scientists determined if there was ether or not was through a test. This test was to send light...

Nov2503 10:36 AM
Eepl

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here is a good paper that may be of interest:http://uk.arxiv.org/abs/grqc/0311082

Nov2603 01:34 PM
ranyart

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This is a pretty basic concept of relativity that used to make sense to me but I have since become a little unclear on...

Nov2703 07:30 PM
Hurkyl

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1,201 
Do photons effectivley travel instantaneously? If not then the question posed by Einstein "If I travel at the speed of...

Nov2803 10:30 AM
Pyrokenesis

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1,025 
according to these theories; I belive every following day a day is becomming shorter. but we dont feel it.

Nov2803 07:05 PM
Nereid

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i have come across a reference to an experiment pertaining
to gravity, it is called the WEAX experiment, the only...

Dec103 04:53 PM
wolram

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1,050 
: It that Real???
http://www.superstringtheory.com/forum/socboard/messages6/99.html

Dec303 03:29 PM
LURCH

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I have had this question nagging at me and making me lose sleep for over a year now, and I can't find the answer...

Dec303 09:25 PM
Mr. Robin Parsons

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http://arxiv.org/list/grqc/0311
http://arxiv.org/PS_cache/grqc/pdf/0311/0311021.pdf
...

Dec403 05:23 AM
wolram

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1,438 
If you take two identical radioactive samples, place one on Earth and another on a nearlightspeed spaceship, and...

Dec503 04:49 PM
mathman

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2,145 
Can someone explain aether to me in depth? I hear talk about it, and feel rediculous not knowing what they're talking...

Dec503 06:41 PM
jcsd

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1,611 
...
Hydogen's Mass or 'Weight' is negative (i.e. less than 0 kg)
Given a Balloon filled with 'Hydrogen'...

Dec503 10:35 PM
Nereid

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3,031 
on the subject of looking for the granularity of spacetime,
cherenkov radiation is given of if a particle exceeds c...

Dec603 03:36 PM
wolram

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1,960 
After recently seeing Brian Greene's "Elegant Universe," I was struck by an idea  maybe not an original idea, but an...

Dec603 03:53 PM
Ambitwistor

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1,720 
suppose you had a planet with a train going all the way around the circumference. The train is a complete loop so you...

Dec603 05:52 PM
GijXiXj

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I given to understand that you can't tell the difference between accelerating in space and standing in a gravity well,...

Dec603 06:43 PM
Vosh

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2,723 
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

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1,717 
1. The time distortion due to relative velocity does not cause any "real" loss if time in itself,loss of time only...

Dec803 10:10 AM
Ambitwistor

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2,384 
ok, so I'm sitting in class one day, and my physics teacher is talking about light... and since we had just finished...

Dec803 04:21 PM
mathman

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12,452 
Let's say there are two objects of the same mass. One of the is moving, the other not. Now let's look at both of them...

Dec1003 05:05 PM
Tail

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1,696 
I keep finding stuff on the net about the speed of gravity and how some people contest it should be c, the speed of...

Dec1103 04:27 PM
BracaleRon

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4,915 
Ok, lets say that we are in a giant vaccuum, but we have a crapload of space. A crapload. And we get a really powerful...

Dec1103 10:46 PM
Wooh

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PSR J07303039 is similar to the famous neutron binary which Taylor and Hulse studied, leading to another set of...

Dec1203 08:42 AM
Nereid

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3,720 
If I were to attempt to prove that the dot product of an electric and magnetic field is invariant under the conditions...

Dec1203 09:37 AM
DW

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3,901 
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

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1,715 
imagine two people in deep space, with no frame of reference but each other. if one of them is speeding along at near...

Dec1203 06:54 PM
dace

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3,530 
how special and the general relativity explains the position of moon from the earth reference system taking also into...

Dec1503 09:33 AM
quantum

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1,481 
Lets say a ship, travelling 98% the speed of light approaches another ship travelling the opposite direction at the...

Dec1503 05:20 PM
TheDonk

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2,938 
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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1,018 
Here's a few kickers for those of you who don't know a lot about the mathematics of relativity:
The locus of all...

Dec1603 07:06 PM
chroot

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1,175 
Particles having nonzero rest mass can approach, but not reach, the speed of light, since their mass would become...

Dec1603 10:21 PM
DW

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1,083 
Is this true?
Einstein's E=mc2 'was Italian's idea'
Rory Carroll in Rome
Thursday November 11, 1999
The...

Dec1703 02:00 PM
chroot

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2,165 
I just read in a popular magazine about the satellite to be launched in order to measure the frame dragging by a...

Dec1703 03:42 PM
selfAdjoint

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2,564 
Maxwell's eqn, in invariant form reads:
F^{\mu \nu}{}_{;\nu} = J^{\mu}
and
F_{\alpha \beta ;\gamma} +...

Dec1803 09:53 AM
DW

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1,058 
http://www.spacedaily.com/news/cosmology03i.html
For the second time in as many months, images gathered by the...

Dec1803 11:01 PM
Nereid

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this is a really good survey of all the cosmic ray and gammaray burst news, and the new detectors planned, with some...

Dec1903 09:26 PM
marcus

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