Can gravitational time dilation be measured at different levels of the universe?

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Discussion Overview

The discussion revolves around the concept of gravitational time dilation and its potential measurement at different levels of the universe, including the effects of various gravitational fields such as those of planets, stars, and galaxies. Participants explore how time might be perceived differently depending on the distance from these gravitational sources.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant proposes that time might be affected at different levels of the universe, questioning how it would change as one moves away from gravitational sources like the Sun and the Milky Way.
  • Another participant suggests that while time may tick faster further away from a gravitational field, the effect would be very small at significant distances from each source, indicating that gravitational time dilation is only noticeable when relatively close to these sources.

Areas of Agreement / Disagreement

Participants express differing views on the extent of gravitational time dilation at various distances, with some uncertainty about how significant the effects would be as one moves further from gravitational sources.

Contextual Notes

There are limitations regarding the assumptions made about the measurements and the conditions under which gravitational time dilation is observed, as well as the dependence on the definitions of "closeness" to gravitational sources.

NWH
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Okay, this is a hard question to phrase, so I apologise if I'm off course somewhere. One could say our world around us is built up in different levels. We live down here on a planet, orbiting around a star, flowing around a galaxy and so on. What I'm wondering is how time would be effected through each of these levels if we took a (hypothetical) measurement at each one. Time up in space is faster than it is on Earth. Now, if we escaped further out of the sun's gravitational field into deep space and stopped at rest, would time tick even faster relative to Earth because we're further away from the sun? Now, what if we went even further and escaped out of the gravitational field of the Milky Way into deep, deep space. Would time continue to tick faster and faster relative to the Earth until we started entering another gravitational field?
 
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Anyone?
 


NWH said:
Okay, this is a hard question to phrase, so I apologise if I'm off course somewhere. One could say our world around us is built up in different levels. We live down here on a planet, orbiting around a star, flowing around a galaxy and so on. What I'm wondering is how time would be effected through each of these levels if we took a (hypothetical) measurement at each one. Time up in space is faster than it is on Earth. Now, if we escaped further out of the sun's gravitational field into deep space and stopped at rest, would time tick even faster relative to Earth because we're further away from the sun? Now, what if we went even further and escaped out of the gravitational field of the Milky Way into deep, deep space. Would time continue to tick faster and faster relative to the Earth until we started entering another gravitational field?
Yes, but the effect would be very small as you get far away from each gravitational source. Gravitational time dilation is noticeable only when you're reasonably close.
 


DrGreg said:
Yes, but the effect would be very small as you get far away from each gravitational source. Gravitational time dilation is noticeable only when you're reasonably close.
Oh, I see. Okay, thanks...
 

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