see the short story "Rotating Cylinders and the Possibility of Global
Causality Violation" by Larry Niven.

----- Original Message -----
From: "Russell McMahon" <apptech@PARADISE.NET.NZ>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Friday, July 19, 2002 5:03 PM
Subject: Re: [OT]: Hydrogen Powered Cars


> > > Whoever's planning a trip back in time, by accelerating past the
> > > speed of light, better stop by Einstein's place and tell him to
> > > rethink his theory.
> > >
> > > I'm sure he'd appreciate it. :)
>
> THROUGH the speed of light is not allowed
> PAST is perhaps possible using tunnelling - but that's another story :-)
>
> It is also, incidentally, apparently possible to time travel without
> violating Einsteinian requirements by using "special equipment". One such
> equipment is a cylinder with a mass about that of our solar system
rotating
> along its long axis such that the surface velocity approaches an
appreciable
> fraction of the speed of light. Space-Time is "dragged" by the rotating
mass
> such that it is skewed and the time axis becomes a space axis and some of
> the space vectors become the time axis. You then travel along the "time"
> axis as desired and then turn the machine off. I am NOT, despite what it
may
> appear, making this up ! :-)
>
> Due to the specialist nature of the equipment nobody has made one yet :-)
>
> I prefer tunnelling but nobody has seriously proposed it yet. They will.
>
>
>
>         RM
>
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