Re: SCI: existance -vs- non-existance

xtu62 (
Wed, 3 Dec 1997 20:06:33 -0000

Okay, I'll pay $95 if Anders promises to post weekly discriptions of
space/time distortions :-)

Anders Sandberg wrote:

>If you stand in a wormhole, you are in a certain (very weird) place,
>possibly with parts sticking out at the "entrance" and "exit". There
>is no real paradox here, you are in one place at a time (or strictly
>speaking a locally connected volume of places).
>The "non-existent" gap cannot be entered, since by definition it does
>not exist. But there is a "throat" in the wormhole, where it is most
>narrow; in a spherically symmetric wormhole this is a spherical
>region. From the outside, a wormhole in space would look like a
>distortion of the stars behind it, with a distorted ball of stars in
>the center (they are stars seen through the wormhole throat). If you
>move through it, you will see the star-ball in front of you expand,
>until it fills half of your sky and the more and more distorted
>universe behind you fills the other half; you will also see a
>distorted "reflection" of yourself along the seam between the
>starfields created as light rays from you circumnavigate the
>throat. As you emerge, the starfield in front of you will become less
>distorted, and the stars of the place you left will become a ball
>inside the other wormhole distortions. In a small wormhole this
>transition is of course very quick.
>I really wish I could draw it, but email currently doesn't support the
>kind of multimedia I would like (imagine being able to create
>"applets" showing how you visualize a certain phenomenon!).
>At no point in the traversal have you left spacetime, you have just
>moved through a more exotic region than we are used to. It is possible
>to get from point A to point B faster than a straight light ray by
>taking a wormhole shortcut, but at no place is there a violation of
>the lightspeed limit locally.