There are three events of interest here. An "Event" is a specific location in space-time, but the coordinates for the event will be different for different observers.
Event 1: Bob and Alice meet. Bob sets his clock to Alice's time.
Event 2: Bob and Chuck meet. Chuck sets his clock to Bob's time.
Event 3: Chuch and Alice meet. The two of them compare clocks.
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So, 5y after Bob passed Alice, Bob meets Chuck. 5 y after Chuck passes Bob, Chuck meets Alice. From the point of view of Chuck and Bob, it's been 10 years. However, Between Alice meeting Bob and Alice meeting Chuck, 20y have passed for her.
This is functionally equivalent to the Twin paradox, but doesn't involve any acceleration. How does it work?
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BlaisePascal Jun 20th, 2003
Kuro5hin
