477a74b0@news.povray.org...
>  Suppose you have two trains of the same length travelling on the same
> track on opposite directions, towards each other.
>
>  In the middle the track splits into a double track for a certain 
> distance,
> but this distance is slightly smaller than the length of either train.
>
>  The task is to make the trains pass each other so that they can continue
> their journey.
>
>  The trains cannot be split and you can't remove anything from the trains.
> The track cannot be modified, and you cannot build additional track.
>
> -- 
>                                                          - Warp

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

Xavier

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