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From: eder@ssc-vax.UUCP (Dani Eder)
Newsgroups: net.space
Subject: Re: Speed Of Light (explain this too)
Message-ID: <730@ssc-vax.UUCP>
Date: Sat, 11-May-85 16:20:42 EDT
Article-I.D.: ssc-vax.730
Posted: Sat May 11 16:20:42 1985
Date-Received: Sun, 12-May-85 06:12:10 EDT
References: <2073@decwrl.UUCP> <1748@ukma.UUCP>
Organization: Boeing Aerospace Co., Seattle, WA
Lines: 22

> 
> My example is something that has been bothering me for years.
> 
> 	Ship A  (v = .6c)				Ship B  (v = .6c)
> ------------------------------>
> 				<------------------------------
> 
> Consider yourself to be aboard ship A.  Assume there are no stars, no points
> of reference except ship B.  To you, your ship appears to be standing still.
> According to relativity, when ship B flys by, it is approaching you at no more
> than c.
> 
> How can this be?  Time dilation?  How can time dilation be a function of speed,

     You have contradicted yourself.  If there are no external reference
points, then there is no way to measure Ship A as moving at 0.6c to the
right.  It moving to the right implies to the right WITH RESPECT TO THE
CRT SCREEN, ie an external reference.  Ship B will appear to be moving
towards you at .882c.  You will appear to yourself to be moving at v=0.
The relative velocity will be less than c.

     Dani Eder / Boeing Company / ssc-vax!eder