All Questions
Tagged with gravity time-dilation
123
questions
2
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67
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How to properly combine kinetic and gravitational time dilation effect?
I developed a time dilation calculator that includes both kinetic (Lorentz Factor) and gravitational (Schwarzschild Metric Formula) factors to assess the time difference between Earth and satellites. ...
7
votes
4
answers
963
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Do you always experience the gravitational influence of other mass as you see them in your frame?
You see a galaxy far away. That galaxy is attracting you with a certain amount of gravity. I'm wondering if the gravity influence of the galaxy on you, as measured by you, always ends up being what ...
- 161
3
votes
2
answers
84
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Tug of war between observers in frames with different rate of time
You have a very dense hollow sphere of matter. Observer A is inside the sphere inside a rocket. Observer B is in an identical rocket outside the sphere where the ring's gravity is negligible. They are ...
- 161
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40
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Topological illustration of spacetime dilation: which function should I use for isometric lines spacing?
Scientific popularization, when it comes to illustrating spacetime dilation around massive objects, often relies on the description of a two-dimensional square-grid, which can be regarded as a cross-...
3
votes
1
answer
133
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Time dilation and angular velocity
Is angular velocity (the horizontal rotation of a massive disc falling through the air) sensitive to time dilation or invariant to it? Will its angular velocity (speed of rotation) increase, decrease ...
- 95
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31
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Gravitational Time Dilation: How to find the time difference between orbits at different radii? [closed]
I want to calculate the difference in time measured by a clock at on earths surface (r=6000km), and a geostationary satellite (r=26000km). My approach is as follows:
For simplicity, we consider curves ...
- 11
4
votes
2
answers
627
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GR contribution to time dilation when both clocks are falling freely
When reading simplified explanations of time dilation experienced by satellites, such as those used for the GPS and other satellite navigation systems, the time dilation is often presented as having ...
0
votes
1
answer
60
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Effect of gravitational time dilation on a classic weighted pendulum clock versus a hybrid pendulum clock with a battery
A classical pendulum clock is powered by gravitational potential energy by weights. While a hybrid pendulum clock is somehow propelled by electric current. Both have the same pendulum swing as the ...
- 95
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2
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50
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Observing an event horizon while approaching one
A thought crossed my mind that I realized was hard to conceptualize so I decided to simplify the question by putting it in terms of event horizons.
If I am an observer approaching black hole "A&...
- 101
4
votes
2
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290
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Photoelectric effect under the influence of gravitational time dilation
If the energy of a photon increases under the influence of time dilation in a gravitational field, does this have an effect on the photoelectric effect? Does this mean that the photoelectric effect in ...
- 95
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0
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37
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Is there a formula for gravitational time dilation at the cosmological scale?
There is a standard formula for gravitational time dilation used in eg the operation of the global positioning system. It is based on the integration of g(h) where g is a function relating ...
- 371
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29
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Calculate mass from time dilation
Hi not a physicist in any way so was wondering if I know the age (time passed) and mass of an one object and the age (time passed) of another object, can I calculate its mass?
So Object 1 is Earth:
...
- 101
0
votes
1
answer
45
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When calculating the amount of missing mass in a galaxy due to dark matter, do cosmologists take into account local effects of gravity on time? [duplicate]
If I understand correctly, massive objects cause time dilation, and so time seems to pass more slowly for observers closer to a massive object than those who are farther away. Do cosmologists take the ...
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1
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1
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91
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GENERAL RELATIVITY: gravitational time dilation outside 2 bodies [closed]
I know that gravitational time dilation near a single body is:
$$T_2=T_1\sqrt{1-\frac{2GM}{rc^2}} $$
Can you give gravitational time dilation formula when in proximity to multiple bodies?
- 81
2
votes
2
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814
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Why does time flow more slowly on the ground than on a mountain? [duplicate]
I'm reading the book The Order of Time by 'Carlo Rovelli', which says that time flows more slowly on the ground than on a mountain. It also says that the presence of matter changes how time flows, and ...
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