"Warp" <war### [at] tagpovrayorg> wrote in message 
news:477abc37@news.povray.org...
> Xavier Manget <NOS### [at] freefr> wrote:
>> If the trains' speeds are close enough to the speed of light, 
>> because of
>> relativistic length contraction  (and with correct timing) the 
>> trains will
>> have enough length to pass each other on the double track?...
>
>> Did I get it? :-p
>
>  Yes.
>
>  (Had you heard of the thought experiment, or did you figure it 
> out on
> your own?)
>
> -- 
>                                                          - Warp

This could only be true if the trains and the track are uncoupled.
They are not, so any contraction of trains will apply equally to 
the
track. Same problem, different scale for an outside observer.

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