All Questions
12
questions
1
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0
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74
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Coordinate transformation and absolute motion in general relativity
In special relativity, all motion is relative. But in the presence of black hole, all motion is with respect to black hole. The curvature of spacetime depends on how far we are away from the black ...
- 134
-1
votes
3
answers
127
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Any experiment for relative simultaneity?
Any introduction of relative simultaneity usually is like this :
Alice on a train car shines two beams of light towards both ends where two clock are. She sees both clocks see the light at the same ...
- 291
0
votes
2
answers
140
views
Is there any physical experiment that could tell us which object is moving to the other?
Imagine in empty space there are two objects in where one of them is moving to the other. How we can know which one is moving to the other? If there is an experiment that could tell us, would this ...
user319766
16
votes
10
answers
5k
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Why do bodies traveling at constant velocity experience the same physics?
I am new to special relativity. I don't have a background in physics.
I was reading Brian Green's The Elegant Universe and got hung up on an example.
In fact, Einstein realized that the principle of ...
- 279
7
votes
6
answers
3k
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Does Special Relativity Imply Multiple Realities?
Thank you for reading. Before you answer my question, I feel I need to let you know that I'm still a beginner in special relativity...so the more thorough the answer, the better. Thank you! Alright, ...
- 3,075
0
votes
2
answers
99
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Does time really pass slower near massive objects or only if there is motion of a reference frame relative to it?
Question is fairly self explanatory.
From relativity, we hear that the Earth distorts spacetime making the time pass slower near it in respect to an observer in outer space. My question is, if the ...
user137288
0
votes
1
answer
83
views
Accelerating towards a photon
What will be the relative speed and motion between me and a photon if I would have accelerated towards a photon that is moving away from me?
Would it get away from at a slower velocity relative to me, ...
- 11
1
vote
1
answer
216
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How relativity works for static object and distances
Suppose there are two stations A and B. There is an observer standing on station B. A train starts from station A and moves towards B at a constant speed V. Relative to the train speed of the observer ...
- 215
7
votes
1
answer
2k
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What is my acceleration in my own frame?
This is , I suppose not a good question , but I think I am missing something which confuses me in this question.
So my question is:
Velocity is relative. So suppose a car is moving at a speed $200 \;\...
- 2,797
118
votes
13
answers
42k
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If all motion is relative, how does light have a finite speed?
I've often heard that Einstein shattered the notion of absolute motion (i.e. all things move relative to one another) and that he established the speed of light as being absolute. That sounds ...
- 1,321
0
votes
0
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44
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Does a body curve spacetime at higher velocities? [duplicate]
Suppose we have two objects where the distance over time decreases. Now, as I understand it, general relativity says that we can observe the Universe from the perspective of both objects an get a ...
- 797
3
votes
2
answers
1k
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Galilean transformation in relativity
Assume flat spacetime in a general relativistic framework (or special relativity for that matter) and two observers $A$ and $B$, with non-vanishing velocity relative to each other. We know that they ...
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