All Questions
Tagged with time special-relativity
552
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Gravitational time dilation near the Earth [closed]
I recently read the statement that near the Earth, in the Newtonian weak gravitational field, gravity is 99.9999% mainly due to "curvature of time" (ie gravitational time dilation), and only ...
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For an observer on a spaceship moving near the speed of light away from Earth, would Earth be moving near the speed of light in the other direction? [duplicate]
There is something I don't understand about time relativity in examples given in internet, television, etc. Supposedly if a spaceship takes off from Earth and moves closer to the speed of light, time ...
- 167
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2
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69
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To understand relativity in time with time dilation experiment
The time dilation experiment involves two frames in relative motion, let one at ground and other at train with velocity V. The light clock runs faster in rest frame, as seen by an observer A at rest ...
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Condition for synchronizing clocks in the special relativity paper
I'm reading Einstein's special relativity paper and couldn't understand the condition for synchronizing given in the following paragraph taken from the paper -
If at the point A of space there is a ...
5
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3
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242
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Time dilation rotating around the center of mass
If 2 objects connected by a massless rod or wire, rotate around the center of mass, do they experience time dilation ? I'm thinking that the smaller one will move faster so time will pass slowly, but ...
- 431
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Symmetrical Time Dilation [duplicate]
I have lately been researching time dilation and relativity, and thought about this phenomenon:
Take two people, Observer A, and Observer B, who are both carrying clocks. Observer A travels through ...
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-1
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4
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98
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Does the speed of light determine how slow time can move?
Since moving faster makes time move slower. Does that mean that there is an absolute minimum rate at which time passes? If so. Is there also a maximum?
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How much time passes relative to the protons inside the LHC?
The time depends on the speed of movement. Protons in the LHC move at near-light speed. Therefore, they perceive a different time than the scientist who is observing them. My question is how much time ...
- 161
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43
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Time direction ambiguity in stationary observer's 4-velocity
Working in the mostly + convention, for a timelike geodesic in Minkowski spacetime we have the requirement that (c=1):
$$u^\alpha u_\alpha=-1$$
and that it of course obeys the geodesic equation.
If we ...
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1
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179
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Can we consider that the photons that were not and will never be detected live in a zero-dimensional space? [closed]
According to Einstein’s theory of relativity, any particle traveling at the speed of light experiences no passage of time. It follows that if a photon travels through space then within any two points ...
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36
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Measurement of the velocity of a celestial body by means of (relativistic and classical) gravitational effects on clocks
Imagine a planet with the same properties as Earth, this time moving in an elliptical orbit around a black hole of a large number of solar masses. Also imagine that the surface of this planet is as ...
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1
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Are astronauts really younger than the rest of us after their trips to space? [closed]
I have seen this commented in a million places on social media (see here as well as places like HowStuffWorks, Business Insider, and even Scott Kelly makes the claim in the Guardian. Their reasoning ...
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1
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Relativity Time Dilation with a twist- Apparent Paradox [duplicate]
Imagine identical triplets on Earth: Ana, Barb, and Evelyn. Ana launches in a spaceship traveling .85c. She knows time on Earth is elapsing 1.9 times faster.
A few months later, Barb launches in a ...
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2
votes
1
answer
546
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How do they set the clocks on spacecraft visiting several other planets?
Scientists have sent spacecraft into distant space passing nearby other planets on the voyage. How do they set the clocks to adjust for kinetic time dilation (special relativity) and gravitational ...
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Can I find $\frac{dm}{dt}$ where $m$ is the relativistic mass of a particle?
So, recently I learned the basics of Special Relativity, and I found out that the mass of a body increases with the increase in its velocity as given by the Relativistic Mass equation:
$m=\frac{m_0}{\...
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