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Simply, what is a Wormhole?by Henzo
Tags: wormholes 
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#1
Apr1512, 11:53 AM

P: 8

I know it must be a little annoying to have someone ask for a simple explanation of something that isn't simple, but I've been trying to find out in various ways and nothing seems to explain exactly what a wormhole is. Sort of, not just how does it work but also how does it occur and what is it? Again this may be asking for the impossible but if I could get it in very, very Laymen's terms that would be great :)



#2
Apr1512, 12:50 PM

P: 15,319

http://en.wikipedia.org/wiki/Wormhole It would be better to read up on it, then come back with specific questions. That's commonly how we handle these kinds of 'what is x?' questions. BTW, the more formal term is EinsteinRosen bridge. 


#3
Apr1512, 03:52 PM

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#4
Apr1512, 09:03 PM

P: 8

Simply, what is a Wormhole?
Okay, well if the wiki page is all the 'basics' I definitely didn't understand much of it. Perhaps I need a crash course in physics. I'll try and ask more specifically.
So as far as I understand, a traversable wormhole (if they can even exist) would enable you to travel faster than light speed because of the curvature of spacetime. . does this mean that the inside of a wormhole does not exist in spacetime, perhaps outside of the universe in some way? And if so does that not completely disable any object, that exists in space and time, to transfer its existence into this wormhole at all (without some catastrophic effect)? But I guess my main question is, even if you can travel faster than light in this way, how does that enable you to travel backwards in time or reverse time in anyway, or any definition/perception of time. Surely that's completely impossible? And if my questions are already flawed or don't make sense please explain why. Thank you :) 


#5
Apr1512, 09:18 PM

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#6
Apr1612, 08:07 AM

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#7
Apr1612, 08:16 AM

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#8
Apr1612, 10:27 AM

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#9
Apr1612, 02:32 PM

P: 8

Right. Aren't the implications of this all far too complex to even seriously consider? How can we know that this time dilation wouldn't affect the entire wormhole not just one mouth? How could it ever even be physically possible to move a wormhole at all, let alone maintain it near extreme forces or near light speed? Surely you can't even transfer into a spaceless space, because you are of space? So even if you can keep it open can it really be traversable? And with that theory of quantum mechanics could this not be actually an entirely different universe/dimension? So if you think about it, you can't arrive before you even jumped in, but before another you in another dimension/universe jumped in? And what is the reasoning in the theory that microscopic ones occur naturally all the time?
Basically what is the meaning of everything ever please? 


#10
Apr1612, 03:33 PM

Sci Advisor
P: 2,193

I suggest if anyone wants to see a little bit about how 'classical' wormhole theory works you read Visser's treatise: Lorentzian Wormholes http://www.amazon.com/LorentzianWor.../dp/1563966530 . A lot of the calculations are done assuming some kind of naive approximation of quantum gravity. I'll leave it to you to decide whether or not the results are compelling enough to warrant serious merit. At any rate, I think it's a great read regardless. 


#11
Apr1612, 06:11 PM

P: 15,319

Threads have been locked for being far less sciencefictiony than this one. 


#12
Apr1612, 07:09 PM

P: 8

Just wanted to get the idea of this whole theory for a piece of fiction I'm writing, but I know that it's a seriously considered theory and I don't like making mistakes (even in fiction). If I continue to this for further research then I'll definitely check out your recommendation, thank you. You've all been helpful, I hope I'm not misusing this site in any way! :) 


#13
Apr1712, 02:59 AM

P: 125

HarryRool's Wormhole FAQ was really interesting to read.
Having gone through all that, it seems to me the a wormhole could almost be said to be the geometric inverse of a 3sphere, at least with respect to how hypothetical light pulses interact with them. A light pulse emanating from a point in a 3sphere diverges to "infinity", reaching a maximum radius, and then converges again, albeit at the antipode. Whereas a light pulse from infinity converges on a wormhole, reaching a minimum radius, emanates from the other side and diverges to infinity again, albeit a different infinity. Also, here's a great video simulating a flight through a wormhole: http://www.youtube.com/watch?v=DzPDxb5qVQ 


#14
Apr1712, 03:42 AM

P: 51

One of the Amazon reviewers for this book seems to be a screenwriter who used it to make his screenplay more believable. 


#15
Apr1712, 09:53 AM

P: 317




#16
Apr1712, 10:52 AM

P: 13

Understand the concept of wormhole by taking an example of an apple and a worm . Consider the apple has four faces with face 1 opposite to face 3 and ... . Now the worm wants to go from face 1 to face 3 . It can either go 1 to 3 by travelling to 2 or 4 and reach to 3 or , it can dig a hole inside the apple and reach to 3 .
This explanation is very basic , just to get the starting clue of what is wormhole. In order to understand what actually wormhole is , you must have good knowledge of SPACETIME reference frames . I hope this helps . 


#17
Apr1712, 02:26 PM

Sci Advisor
P: 2,193

Of course if one doesn't have the preparation or time to invest in such an endeavor, popular books (or the FAQ you mention) are a good substitute. However this usually comes at the disadvantage of having to take a lot of things for granted, and pushing analogies sometimes farther than is correct. It is somewhat like trying to discuss modern cosmology when all you know about is the balloon analogy. 


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