[net.space] Relativity

@S1-A.ARPA:KFL@mit-mc.arpa (09/06/85)

From: Keith F. Lynch <KFL@mit-mc.arpa>

    Date:     Tue, 14 May 85 7:06:31 EDT
    From:     Doug Gwyn (VLD/VMB) <gwyn@Brl.ARPA>

    ...  Both cases assume that there is a meaning to where
    the distant object "really is" and what its time "really is"; in general
    there is no single answer to these questions.

  Sure there is.  The answer would be different if you were travelling at
a different speed or in a different direction, but for any given observer
(in relativity, people are all called 'observers', just as on a computer
system, people are all called 'users') there is a very real time and location
for other objects.
								...Keith

ray@rochester.UUCP (Ray Frank) (09/09/85)

> From: Keith F. Lynch <KFL@mit-mc.arpa>
> 
>     Date:     Tue, 14 May 85 7:06:31 EDT
>     From:     Doug Gwyn (VLD/VMB) <gwyn@Brl.ARPA>
> 
>     ...  Both cases assume that there is a meaning to where
>     the distant object "really is" and what its time "really is"; in general
>     there is no single answer to these questions.
> 
>   Sure there is.  The answer would be different if you were travelling at
> a different speed or in a different direction, but for any given observer
> (in relativity, people are all called 'observers', just as on a computer
> system, people are all called 'users') there is a very real time and location
> for other objects.
> 								...Keith
A question:  If I were in a capsule and then put into a gigantic atomic
accelerator and accelerated to close to the speed of light, would not time
slow dowm for me and as such cause me to become invisible to the observers who
will have long since died of old age?