All Questions
11
questions
3
votes
3
answers
329
views
Comparison of clocks running at different heights in a gravitational field
I hope this question has not yet been asked. If so then please link me to the answer.
If I build an apparatus which, on flicking a switch, sends a light beam, a distance to a mirror, and reflects it ...
0
votes
0
answers
461
views
How much time dilation are we experiencing here on Earth? [duplicate]
We experience time dilation from speed and gravity, but we are in more than just the Earth's gravity field, but also the sun's and the galaxy's gravity field and we are both spinning at 1,670 km/h, ...
0
votes
1
answer
52
views
How can we have different speeds relative to a same point for a same object?
A day last not the same at all altitudes (https://aapt.scitation.org/doi/10.1119/1.5000802), meaning earth has different angular velocities.
What is the actual rotation speed of the earth to the ...
- 11
0
votes
3
answers
268
views
Special Relativity and Time Dialation
I have trouble understanding why time dilation occurs for objects moving towards you at no angle.
There are two example in my physics textbook:
A woman is on a moving train holding two light bulbs ...
- 1
7
votes
2
answers
1k
views
Does Earth experience any significant, measurable time dilation at perihelion?
Is there any measurable time dilation when Earth reaches perihelion? Can we measure such a phenomena relative to the motion of the outer planets?
- 79
2
votes
3
answers
543
views
How can we explain the position of Mann's planet when travelling on Miller's planet in Interstellar movie?
In the middle of the movie Interstellar, a crew of astronauts land on Miller's planet. For them only one day passed. For the one astronaut left on the station, 23 years passed.
Imagine both look at ...
- 103
-1
votes
1
answer
119
views
How can they see 1 day and 23 years at the same time in the gravitational twin paradox of Interstellar movie?
In the middle of the movie Interstellar, a crew of astronautes land on Miller's planet. For them only one day passed. For the one astronaute left in the station, 23 years passed. If we admit there is ...
- 103
2
votes
2
answers
234
views
Does earth rotate in a shorter time at 0m than at 5000m?
We know rotation period of earth (stellar day) is 86164.098 903 691 seconds of mean solar time.
At 0m time is supposed to be more dilated than at 5000m because of gravitational time dilation.
Then ...
- 103
3
votes
1
answer
204
views
Relativistic effects of an orbit around sun in a different direction than Earth
If I manage to orbit around the sun at the same speed but in a different direction than the earth, will I perceive the time on earth going faster or slower than my own time? And what about people on ...
- 71
3
votes
3
answers
456
views
Milky Way galaxy central black hole and time contraction of life story
We know that life is almost 4 billion years old on Earth.
We also know that time contracts as we approach the event horizon of the massive black hole at the center of the Milky Way galaxy.
Now the ...
user56963
4
votes
2
answers
414
views
How do we age if we tunneled to Earth's core?
Scenario
Suppose there exists an advanced technology that can hypothetically transport living humans to study the center of the Earth, as they goes deeper underground most of the Earth's mass would ...
- 13k