Bill Pragnell wrote:
> Poor fools. All you need to do is use your hyperdrive to circumnavigate the
> universe, dropping out occasionally to take a photo, then return to earth in
> time for a cup of tea before lunch.

  Wouldn't this break the fundamental law that information cannot be
transported between two points faster than c?

  In other words, you would have to travel from Earth to an extreme
point in the visible Universe, then to the other extreme, and then back
to Earth, all the while taking photos along the way. This would mean
that you are transporting information between humongous distances in a
short period of time.

  Even if "hyperdrive" would be based on warping space, would this
warping happen faster than c? Wouldn't it break the fundamental principle?

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Warp wrote:

> Actually that would break so many laws of physics that it hurts.

only if you think of it as rotating the universe, and not
as rotating a 3d map of the universe, as I understood it ;)

Also, this view is *not* a snapshot of the universe at any given
time, as the galaxies at the center are current and the galaxies
at the border are seen as they were *two billion years* ago.

I toyed with the idea of compensating at least for the expansion
of the universe but it doesn't really make sense because that also
doesn't show you how the universe looks now with all their proper
motion, interaction, starforming and whatever.

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Christian Froeschlin <chr### [at] chrfrde> wrote:
> Also, this view is *not* a snapshot of the universe at any given
> time, as the galaxies at the center are current and the galaxies
> at the border are seen as they were *two billion years* ago.

Oooh, this reminds me of the delicate task of backing up an Oracle database
while customers are still using it.  (My professor's definition of a "large"
database: one which, if you shut it down to do a backup, your company would go
out of business in the time it takes to do the backup.)

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Among other things, Warp saw fit to write:

>   Wouldn't this break the fundamental law that information cannot be
> transported between two points faster than c?

Fundamental laws are made to be broken. :D

Or rather, we never know how fundamental the laws we know now really are.

-- 
light_source{9+9*x,1}camera{orthographic look_at(1-y)/4angle 30location
9/4-z*4}light_source{-9*z,1}union{box{.9-z.1+x clipped_by{plane{2+y-4*x
0}}}box{z-y-.1.1+z}box{-.1.1+x}box{.1z-.1}pigment{rgb<.8.2,1>}}//Jellby

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Warp <war### [at] tagpovrayorg> wrote:
> Bill Pragnell wrote:
> > Poor fools. All you need to do is use your hyperdrive to circumnavigate the
> > universe, dropping out occasionally to take a photo, then return to earth in
> > time for a cup of tea before lunch.
>
>   Wouldn't this break the fundamental law that information cannot be
> transported between two points faster than c?

Oh, you're no fun. :-)

>   Even if "hyperdrive" would be based on warping space, would this
> warping happen faster than c? Wouldn't it break the fundamental principle?

Leaving aside popular notions of 'hyperdrive', which usually seems to involve
travel in some other domain with higher speed limits... I thought spacetime
wormholes were permitted by general relativity (provided you can find some
exotic matter)? Or is that an outdated idea these days?

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"Bill Pragnell" <bil### [at] hotmailcom> schreef in bericht 
news:web.4a04a8f881e9769969f956610@news.povray.org...
>
> Leaving aside popular notions of 'hyperdrive', which usually seems to 
> involve
> travel in some other domain with higher speed limits... I thought 
> spacetime
> wormholes were permitted by general relativity (provided you can find some
> exotic matter)? Or is that an outdated idea these days?

If I have understood things correctly, you can travel instantaneously by 
wormhole from one 'side' of the universe to the other....

Thomas

ps I do that all the time in my dreams....

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Bill Pragnell wrote:
> Leaving aside popular notions of 'hyperdrive', which usually seems to involve
> travel in some other domain with higher speed limits... I thought spacetime
> wormholes were permitted by general relativity (provided you can find some
> exotic matter)? Or is that an outdated idea these days?

  A "wormhole" requires that space is already shaped in a certain way
that allows a "shortcut" to be created. What if space is *not* shaped
that way? How do you create the wormhole?

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Warp <war### [at] tagpovrayorg> wrote:
> Bill Pragnell wrote:
> > Leaving aside popular notions of 'hyperdrive', which usually seems to involve
> > travel in some other domain with higher speed limits... I thought spacetime
> > wormholes were permitted by general relativity (provided you can find some
> > exotic matter)? Or is that an outdated idea these days?
>
>   A "wormhole" requires that space is already shaped in a certain way
> that allows a "shortcut" to be created. What if space is *not* shaped
> that way? How do you create the wormhole?

I'm (definitely) no expert, but most things I've read on this appear to favour
taking a naturally-occurring quantum wormhole and somehow 'growing' it. The
energy and mass this would appear to require (especially if you want tidal
forces benign enough to make it traversible) are stunning, and of course should
be exotic.

As for making your wormhole an actual shortcut, well, it all depends on where
the other end comes out and how long (locally) the throat is.

I would say that, at least for now, all bets are off. :)

This list is interesting, although I have no idea what credentials the author
has:

https://webfiles.uci.edu/erodrigo/www/WormholeFAQ.html

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nemesis wrote:

> You know this deserves an animation, right? :)
> 
> even a simple rotation will do, please... :)

Better late than never ;)

http://news.povray.org/povray.binaries.animations/thread/%3C4ab01be4%40news.povray.org%3E/

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