I am interested in what current thoughts on wormholes by some physicist
are in this situation.

Say an object at A went into a worm hole and came out at B.

An observer at A would see an object disappear. Would he see the laws
mass/energy and momentum are conserved?

Now at B an observer would see an object suddenly appear. Would he see
that the laws of mass/energy and momentum are conserved? Also would he
see the laws of thermodynamics conserved.

Any thoughts?


--
These is always a page that we are looking for and there is always a
note, that we have lost that we now really need now.


Observations of Bernard - No 66

NOTE: I take GR as my theoretical context, using any of the various
"wormhole" manifolds.

Bernardz wrote:
Say an object at A went into a worm hole and came out at B.

An observer at A would see an object disappear.

No, it would not "disappear", it would continuously travel away from the
observer into the wormhole. This is no different from the object
traveling away from the observer but not through the wormhole (except
for the details of the path). But yes, there can be a last instant at
which the object is visible to the observer -- similar to turning a corner.


Would he see the laws
mass/energy and momentum are conserved?

Sure. Remember, please, that in GR the conservation of energy and
momentum is a LOCAL law, and applies at each and every point in the
spacetime manifold. At every point along its trajectory, this traveling
object will move such that energy and momentum are conserved (in the
sense of GR).


Now at B an observer would see an object suddenly appear.

No, it would not "suddenly appear", it would continuously travel toward
the observer coming out of the wormhole. This is no different from the
object traveling toward the observer but not through the wormhole
(except for the details of the path). But yes, there can be a first
instant at which the object is visible to the observer -- similar to
turning a corner.


Would he see
that the laws of mass/energy and momentum are conserved? Also would he
see the laws of thermodynamics conserved.

Yes to both. At each and every point in the spacetime manifold.

[But the laws of thermodynamics are subtle in GR. I'm not
familiar with the details.]


Tom Roberts

Bright green flying elephants use 'em to lay there eggs in.
Androcles


"Bernardz" wrote in message
news:MPG.1ba9dc48e547ca41989b3e@news...
|I am interested in what current thoughts on wormholes by some physicist
| are in this situation.
|
| Say an object at A went into a worm hole and came out at B.
|
| An observer at A would see an object disappear. Would he see the laws
| mass/energy and momentum are conserved?
|
| Now at B an observer would see an object suddenly appear. Would he see
| that the laws of mass/energy and momentum are conserved? Also would he
| see the laws of thermodynamics conserved.
|
| Any thoughts?
|
|
| --
| These is always a page that we are looking for and there is always a
| note, that we have lost that we now really need now.
|
|
| Observations of Bernard - No 66
|
|