All Questions
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Derive this gravitational time-dilation formula
How is the following gravitational time dilation formula from this Wikipedia article derived?
$$T_d(h) = \exp\left[\frac{1}{c^2}\int_0^h g(h') dh'\right]$$
where $T_d(h)$ is the ''total'' time ...
- 1,030
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2
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220
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What is missing in this gravitational time dilation derivation?
I am confused about one derivation of the gravitational time dilation.
Consider a one dimensional time-independent gravitational field. Two clocks are at rest with respect to the gravitational field ...
- 1,030
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1
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88
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When two neutron stars collide to form a black hole, for how long will last the emitted signal from the very vicinity of the new formed event horizon?
When two neutron stars collide they may form a black hole which is not a supermassive black hole but it should provoke that outside its newly formed event horizon photons are emitted as a consequence ...
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2
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1
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Gravitational red shift and gravitational time dilation
I am a beginner in general relativity. I read the relevant section 9.1.5 in Relativity make relatively easy by Andrew Steane. After that, I thought a problem in gravitational red shift and ...
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1
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How would a person under gravity observe a person on a nearby planet but under 1000 times of that gravity?
So, imagine I am standing in a region in space where the gravity is, say 1g. Now, on a nearby planet, there is my friend who is under the influence of much stronger gravity, like 1000g. According to ...
- 175
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Clocks in gravitational field
"In a gravitational field clocks slow down" - this is an effect of gravitational redshift.
Are the following statements correct?
If I take a "clock" from the surface of the Earth ...
- 928
2
votes
1
answer
381
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Gravitational time dilation from the perspective of an accelerating rocket
A common thought experiment illustrating gravitational time dilation involves Alice and Bob in an accelerated rocket. Alice is above Bob. Bob fires periodic signals upwards. Alice observes the signals ...
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8
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3
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Does gravitational redshift imply gravitation time dilation?
The EEP is used to justify that if an observer on the ground shoots a beam of light towards a tower, then when the light reaches the tower, it will be red shifted. This is because of what happens in ...
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