Time Dilation: Does Aging & Decay Slow Down?

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Discussion Overview

The discussion revolves around the concept of time dilation, particularly in the context of aging and decay for objects moving at relativistic speeds. Participants explore how time dilation affects temporal processes from different reference frames, specifically comparing experiences of individuals in a spaceship to stationary observers on Earth.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants propose that time dilation implies that aging and decay would also appear to slow down for an observer on Earth watching a spaceship moving close to the speed of light.
  • Others argue that from the perspective of the person in the spaceship, time would seem to pass normally, and they would age at their usual rate.
  • A later reply mentions that upon returning to Earth, the person in the starship would find that more time has passed on Earth than for themselves, referencing the 'twin paradox' or 'clock paradox'.
  • There is a distinction made between the apparent time dilation observed from different frames of reference and the actual aging process experienced by the traveler.

Areas of Agreement / Disagreement

Participants generally agree on the effects of time dilation as it relates to aging and decay, but there are nuances regarding the perspectives of different observers and the implications of the twin paradox that remain contested.

Contextual Notes

Some assumptions about the nature of time and reference frames are not fully explored, and the discussion does not resolve the complexities of the twin paradox or the implications of time dilation on biological processes.

cyberfish99
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I understand that time dilation means that the closer to the speed of light an object goes, the slower time seems to pass relative to a stationary observer. My question is, if time seems to slow down in the spaceship moving at something close to the speed of light, then would other time related phenomena, like aging or decay also seem to slow down?
 
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cyberfish99 said:
I understand that time dilation means that the closer to the speed of light an object goes, the slower time seems to pass relative to a stationary observer. My question is, if time seems to slow down in the spaceship moving at something close to the speed of light, then would other time related phenomena, like aging or decay also seem to slow down?
Absolutely. To the person in the spaceship, everything runs normally. To the observer on earth, all temporal processes in the moving ship run slowly.
 
But for the person in the starship, time would move along at seemingly the same pace it always has. So that means that the person would age at their normal rate, but once they slowed down, many more years would have passed, if i have this correct.
 


cyberfish99 said:
But for the person in the starship, time would move along at seemingly the same pace it always has. So that means that the person would age at their normal rate, but once they slowed down, many more years would have passed, if i have this correct.
Yes, if the starship returned to earth, more time would have passed on Earth than on the starship.

This is called 'the twin paradox' or 'the clock paradox' and there have been millions of words written about it. It is not the same thing as the apparent 'time dilation'.
 
thank you, that seems to clear up the confusion
 

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