Understanding Wormholes & Black Holes: An Exploration by Ed

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Discussion Overview

The discussion centers on the concepts of wormholes and black holes, particularly their potential to create shortcuts through space. Participants explore theoretical frameworks, including General Relativity and the Einstein-Rosen bridge, while addressing the lack of empirical evidence for such phenomena. The scope includes theoretical physics and conceptual understanding.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant expresses a personal theory that traveling through a shortcut requires entering the 4th dimension.
  • Another participant suggests that the topic relates more to General Relativity than Quantum Physics and recommends looking up the Einstein-Rosen bridge.
  • Some participants argue that wormholes lack physical evidence and are primarily a concept from science fiction, noting that exotic matter is required to create them at a macroscopic scale.
  • It is proposed that the space inside a black hole could be viewed as a separate "universe," with black holes acting as one-way tunnels, while two-way wormholes might exist in different spacetime geometries unrelated to black holes.
  • A later reply clarifies that while there is an idealized solution in the Einstein Field Equation that includes a wormhole, nothing can actually pass through it, as it would require faster-than-light travel, which does not apply to real black holes formed by gravitational collapse.

Areas of Agreement / Disagreement

Participants express differing views on the existence and nature of wormholes, with some asserting they are purely theoretical constructs without physical evidence, while others explore the implications of black holes and theoretical models. The discussion remains unresolved with multiple competing perspectives.

Contextual Notes

There are limitations regarding the assumptions made about the nature of black holes and wormholes, particularly concerning the idealized solutions versus real-world scenarios. The discussion highlights the dependence on theoretical frameworks and the unresolved status of certain mathematical aspects.

EdLeMarchant
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A classic topic, however I am new to the physics realm and i would like some help into understanding it. I have just finished reading "An Elegant Universe" by Brian Greene "Six Easy Pieces" by Richard Feynman "A History Of Nearly Everything" by Bill Bryson. And across these books i could not find a suitable explanation as to how black holes have the capability of creating a shortcut through space. A theory i came up with this morning is that the only way one can travel through said shortcut, they must travel/enter through the 4th dimension. Please help me understand this. Recommendations to Web links and Books with explanations would be nice!

Thank you. Ed
 
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EdLeMarchant said:
A classic topic, however I am new to the physics realm and i would like some help into understanding it. I have just finished reading "An Elegant Universe" by Brian Greene "Six Easy Pieces" by Richard Feynman "A History Of Nearly Everything" by Bill Bryson. And across these books i could not find a suitable explanation as to how black holes have the capability of creating a shortcut through space. A theory i came up with this morning is that the only way one can travel through said shortcut, they must travel/enter through the 4th dimension. Please help me understand this. Recommendations to Web links and Books with explanations would be nice!

Thank you. Ed

This isn't really Quantum Physics. It's General Relativity. Start by looking up the Einstein-Rosen bridge on Wikipedia if you have further questions about it then try asking in the GR subfoum.
 
I don't think there is physical evidence for anything such as a wormhole. They are a creation of the imagination of science fiction writers.
 
Dr. Courtney said:
I don't think there is physical evidence for anything such as a wormhole. They are a creation of the imagination of science fiction writers.

It was actually Wheeler who first used the term 'wormhole'. We still have no evidence for the exotic matter required to create one at macroscopic scale.
 
In some way the space inside a black hole can be considered an entirely different "universe" and the black hole is a one-way tunnel between ours and the other "universe".

Other more "practical" two-way wormholes could exist in special types of spacetime geometries, but I think they would not involve black holes.
 
EdLeMarchant said:
across these books i could not find a suitable explanation as to how black holes have the capability of creating a shortcut through space.

They don't. There is an idealized solution to the Einstein Field Equation, which describes an "eternal" black hole (one that exists forever, alone in the universe, and never gains or loses any mass), and includes a sort of "wormhole"; but nothing can pass through the wormhole (since doing so would require moving faster than light).

In any real black hole, formed by gravitational collapse of matter, there is no "wormhole" region in the solution at all, so those features of the idealized solution I described above don't apply anyway.
 

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