Newton, Einstein, multiply connected spacetime, Energy and so forth

[ManDay]

So, multiply connected spacetime may exist or even does already according
to current knowledge, right? And in which of the thousand of millions of books
about GR, which every physicist seems to have to have written about at
least once, ever you read about it, authors claim that, although it's in general
possible, it would practically take unobtainably vast amounts of energy to
realize it.

Hm.

Well let's assume we somehow got to acquire such amounts of energy and a
device which, in some magic concealed way, can create a wormhole for us.
What would it be like? Practically, I mean.

Wormholes, once created, must curve spacetime in a way similar to a BH,
just stronger. And as a BH does have an enormous gravitational field and an
event horizon, shouldn't each wormhole have one, too? Meaning, that once
going into the wormhole, you are behind an event horizon you may never
emerge from?

I think I'm confusing a little classical theory, plus rubber- and paper&scissors
model with GR, but let me go on nonetheless and correct me at the
appropriate places.

So far, I reckon that WH would create an enourmous distortion of spacetime
which is as little spatially limited as a BH's one. But let's assume we created
the WH in a way that the gravitational effect in its proximity is limited and
there is no EH, so it's actually feasible for going through (I hope you can
explain why this can be).

Let's say we created such a WH down hear on the planet (huge machinery and
stuff, needs a planet, you know...) and connected it to somewhere out in space
in the 18th century. Here I got a little question, just out of curiosity and less
relevant to my actual problem: Is the time a wormhole is connected to somehow
correlated to the targeted position, or can both arbitrarily "chosen"?

Back to the WH: We used an enormous amount of energy - possibly depleted all
reserves of oil and other fossil fuels, just for the kick (wait, what...) - and now
we got a stable wormhole. Do we have to keep pumping energy into it? Where
will that energy go? Will we retrieve it back, once the wormhole is "brought down"?

A black hole doesn't require much energy to bend spacetime. It just requires mass.
It just sits there and laughs at us while we are squeezing the last iota of oil out
of the ground, to keep our spacetime distortion alive. Or did we use mass to
create it, too? If so, that would again make me wonder how our WH can
effectively not be a BH in appearance an behaviour and not swallow the planet
while it... worms.

So our oil, where does it go? Does our machine which creates the wormhole heat
up? Can it be built a way that it won't heat up and conserve the energy? Seriously,
where is our energy, and how can we get it back?

I got it! I know how we can get it back! Aw wait... That doesn't make any... But
well, let me tell my proposal:

Since we created a tunnel into space, far away from earth, we eventually have
invented a working perpetuum mobile! Yes! It's so simple, every child would get it:
Throw a stone in the black hole here on Earth and see it falling from the sky (or
have your ancestors, offspring respectively seeing it fall down).

There we go! Everything balanced out. If you think about it, its a good
investment, though. Invest an incredible amount of energy and get an infinte
amount back. Problem solved.

But how do we convince the government to fund our project, as they still
believe in such stupid things as "energy conservation" (lol) ?

 

[TcheQ]

Your concept of spacetime is flawed, and it makes you believe a wormhole is some kind of friendly portal.

 

[ManDay]

Your concept of spacetime is flawed, and it makes you believe a wormhole is some kind of friendly portal.

Thank you, friendly expert, for contributing so much to this topic.

 

[Vanadium 50]

There is nothing of any scientific content here - it's all wild speculation.

I encourage everyone to reread the PF Rules on overly speculative posts.