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Subject: 
Re: Relativity Question
Newsgroups: 
lugnet.off-topic.geek, lugnet.space
Date: 
Tue, 7 Nov 2000 21:26:33 GMT
Viewed: 
14 times
  
In lugnet.off-topic.geek, Dave Schuler writes:
In lugnet.off-topic.geek, Dan Boger writes:
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 at .5c, who will have aged 20 years, the occupant or his
twin who stayed on earth?

laf.  That's the paradox.  I think we won't know until we try it.  I've seen
physicists get cross eyed thinking about it.  Some say that _no_ time
will pass at all!

As I understand it, the time dilation will occur for the occupant of the
fast-moving ship, who will experience dilation relative to the stationery
observer.  The traveler won't notice the slowing of time, since everything
in his frame of reference will likewise be slowed.  As such, the stationery
observer is the one who will experience 20 years' worth of time.

    Dave!

Hi,
let's do some math.  IIRC

T = t/(sqrt(1 - (v/c)^2)

where

T:  time elpased for stationery observer
t:  time elapsed for moving observer
v:  velocity of moving observer
c:  speed of light

assuming minimal acceleration.

T = 11.5 yrs.

Experiments have been done where two "identical" clocks were synchronized.  One
remained on earth, serving as the "stationery" observer. The other clock went
up in a plane I think and circled the earth.  When the clock in the plane
returned to earth it was just a bit slower than the clock on the earth.

I love Physics!!!

Thanks
Jay Jacinto



Message is in Reply To:
  Re: Relativity Question
 
(...) As I understand it, the time dilation will occur for the occupant of the fast-moving ship, who will experience dilation relative to the stationery observer. The traveler won't notice the slowing of time, since everything in his frame of (...) (24 years ago, 7-Nov-00, to lugnet.off-topic.geek, lugnet.space)

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