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In lugnet.off-topic.geek, Jude Beaudin writes:
> In lugnet.off-topic.geek, Dan Boger writes:
> > On Tue, Nov 07, 2000 at 08:25:06PM +0000, Jude Beaudin wrote:
> > > If a ship travels for 5 light years at .5c, for whom will the trip take 10
> > > years? The occupants or an observer outside the ship?
> >
> > heh. depending who you ask. for the dude in the ship, the _world_ is moving
> > at .5c, and so the world is aging slower. (btw, it's not a 1/x ratio,
> > I think it's closer to a 1/x^2, but highschool was a long time ago...).
> > For the people on earth, the ship is moving at .5c, and therefore the
> > people on the ship will age slower.
> >
> > I think. IANAP :P
>
> Let me rephrase the question:
> If a man travels on a ship away from earth for 5 light years at .5c, then
> returns to earth at .5c, who will have aged 20 years, the occupant or his twin
> who stayed on earth?
I dunno. Who is undergoing the acceleration? ;)
James
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Message has 1 Reply:
 | | Re: Relativity Question
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| Hi. | | Let's see what I can remember. | |> > On Tue, Nov 07, 2000 at 08:41:38PM +0000, Jude Beaudin wrote: |> > > Let me rephrase the question: |> > > If a man travels on a ship away from earth for 5 light years at .5c, |> > > then returns to earth (...) (24 years ago, 7-Nov-00, to lugnet.off-topic.geek, lugnet.space)
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Message is in Reply To:
| | Re: Relativity Question
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| (...) Let me rephrase the question: If a man travels on a ship away from earth for 5 light years at .5c, then returns to earth at .5c, who will have aged 20 years, the occupant or his twin who stayed on earth? Jude (24 years ago, 7-Nov-00, to lugnet.off-topic.geek, lugnet.space)
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