themostepotente: (iSnape -- PenandUmbra)
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I've been thinking a lot about the time turner and am wondering if there is a similar device that allows travel into the future? Of course there is the argument that since the future hasn't occured yet, how can one travel ahead? But this is fiction, so I suppose we're allowed some leeway?

I've always loved the idea of time travel. The past, the future, matters not. Just the idea of being able to travel backwards or forwards in time is fascinating to me. I'd be very interested to see a brief glimpse into the future, however, and how the characters develop. I have conjured this image in my mind of a post-apocalyptic setting after the War where things aren't so easily put right by magic.

I'm thinking there has to be some correlation between magic and quantum physics, although I'm fairly certain that Rowling didn't go and research Hawking. But at least she had the sense to consider paradoxes, and well, the same matter can never occupy the same space.

Basic theory is that space-time is a four-dimensional construct. A four-dimensional 'worm', whose ends represent the events of your birth and death, is what your life forms in space-time. An object, seen any instant, is a three-dimensional cross section of this worm. The line along which the object lies (ignoring its thickness) is that object's worldline. At any point, the angle your worldline makes with the time axis is a measure of your speed.

Relativity requires that worldlines be timelike. Massive objects distort space-time and bend worldlines. Suppose space-time becomes so distorted so that some worldlines form closed loops. These worldlines would be timelike all around. Locally, they would have all the properties of space and time, but yet they would be corridors of the past. This construct is called a closed timelike curve (CTC). By following a CTC, theoretically we could meet ourselves in the past, or if the loop were large enough, visit our ancestors. How this would allow time travel into the future is frankly, beyond my feeble comprehension :P

I think the time turner was a wonderful plot device though, and one has to wonder now that Harry knows of its existence, how often he considers getting his hands on one. It's really opened up the door for writers to explore an AU with characters that Rowling has killed off without the time period constrictions. So much to explore here, and the possibilities are limitless, really.

So that brings me here. What are everyone's thoughts on time travel and time turners?

Do you have any time travel fics to rec?

--P

Date: 2005-03-23 04:15 pm (UTC)
From: [identity profile] themostepotente.livejournal.com
Anyway. Gödel and multiverses aside, I take Hawking's expansion of the Fermi paradox, i.e. that we haven't had chrononauts from the future visiting us is the strongest proof that time travel is impossible, at least in large numbers. And I better stop before I babble all day...

How do we know we haven't though? Look at Roswell -- perfect example. We are so being misled there. And why? The mass hysteria alone...

Goddess, I love conspiracy theories.

Oh, and babble on, dear. *G* I always love reading your posts.

Date: 2005-03-30 05:17 am (UTC)
From: [identity profile] pen-and-umbra.livejournal.com
Goddess, I love conspiracy theories.

Mwah! :) I have deep love for X-Files and conspiracy theories, but I do think my love for Occam's Razor does trump these tendencies on most occasions... as it happens, the question of extra-terrestrial life is what the Fermi paradox (http://en.wikipedia.org/wiki/Fermi_paradox) attempts to answer.

Me, to believe in either chrononauts and little green men, I do need more data. I mean, I don't need to witness them myself, but I do need information and evidence... I don't need to go into space to believe it's black, because the physics of it make sense and there have been many independent verifiers and photographers who've said that yes, it is indeed black. Same with aliens. And time travellers.

(This doesn't detract from the fun of conspiracy theories, however. They make great brain fodder. ;)

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