All Questions
Tagged with relative-motion general-relativity
33
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Role of motion in experimental results
This page contains:"If you are in a closed room on a ship sailing at a constant speed and the ride is perfectly smooth...[t]here’s no physical experiment you could conduct to tell whether you’re ...
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Detecting external 'forces' in an inertial frame
Disclaimer: Science noob here, I may not use all terms correctly.
I've read somewhere of the following situation: An observer is inside a room (elevator) with no ...
- 137
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Are there local coordinates for Schwarzchild spacetime?
In the Schwarzchild metric, $t$ is the time on the clock of an observer at infinity, and $r$ is the related to the area of a sphere by $A=4\pi r^2$. Are there more physical coordinates one could use, ...
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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
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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, ...
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1
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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 ...
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2
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Dark matter and relativistic mass change [duplicate]
Could the requirement of a dark matter for the missing mass in the universe simply be explained by objects having high relativistic mass change with respect to other objects?
If this is not the case, ...
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How can you accelerate without moving?
I know this question has been asked in other forms, generally regarding the balance of forces. This time I want to focus on motion. I've got a laser accelerometer on my desk. It tells me that I'm ...
user32023
7
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1
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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
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Disappearing galaxies [duplicate]
According to the cosmological model of the expanding universe, the distant (diametrally opposite) galaxies have bigger and bigger relative comoving speed, and this speed (which is not a relative speed ...
- 81
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3
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Is General Relativity compatible with relative speeds bigger than $c$ between two inertial frames?
My question is motivated by a remark done by Tegmark in his book "Our Mathematical Universe". He says that GRT does not prove that relative speeds between material points are always smaller than c. It ...
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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
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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
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Foucault pendulum explanation, rotating earth or rotating universe?
If we start from the assumption that all frames of reference are valid for describing motion, how can a foucault pendulum either prove or disprove that the earth rotates or is stationary?
Couldn't ...
- 11
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Are there any good references on the "gravitational" curvature of spacetime of a moving mass being distorted due to special relativity?
In this Wikipedia paragraph suggesting an explanation for the phenomenon of inertia, it claims:
Another physicist, Vern Smalley, has derived the Lorentz transformation for mass by assuming that the ...
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