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 Traveller
enthusiast
Registered: 04/13/01
Posts: 309
Last seen: 17 years, 2 months
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 String theory 
#388917 - 09/08/01 07:35 PM (23 years, 3 months ago) |
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Anyone know of any good articles/website links that cover that basics of "string theory"? i've heard the words several times over the past few years, had one friend try to tell me about how a point in 3 dimensions can be a string in 4 (just as a 2 dimensional point can be one in 3) 4d pt can be a string in 5....etc...something about up to 16 dimensions?! - that last part was read in a newspaper article about quantum physics so they didn't really say anything except "those crazy physicists!"....
links, or explanations, anyone??
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 Kid
Carpal Tunnel
Registered: 07/21/00
Posts: 2,365
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 Re: String theory [Re: Traveller]
#389424 - 09/09/01 02:05 PM (23 years, 3 months ago) |
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Superstring theory requires 10 dimensions for the mathematics to work, and at this point our particle accelerators can't even test string theory, so it's really a philosophy.
I recommend the book, "The Elegant Universe" by Brian Greene
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trendal
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Registered: 04/17/01
Posts: 20,815
Loc: Ontario, Canada
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Re: String theory [Re: Traveller]
#389431 - 09/09/01 02:11 PM (23 years, 3 months ago) |
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Read these books, they are both EXCELLENT books on string theory.
Hyperspace - Michio Kaku
The Elegant Universe - Brian Greene
Greene's book is, IMO, the better of the two. It's also newer by a few years so it's more up to date. String theory is changing all the time.
As for web sites, I found this one fairly helpful. I wrote a paper on string theory for my Physics ISP a few years ago and this site was great in the early stages of the paper.
http://www.superstringtheory.com/
PS - Kid, there's a way to test string theory without actually using the energies needed for unification. Can't remember exactly how the test works, but it's outlined in Greene's book.
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"Our culture's defined by the ones least defined..." -- The OffspringEdited by trendal on 09/09/01 03:13 PM.
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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.
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Kid
Carpal Tunnel
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Re: String theory [Re: trendal]
#389460 - 09/09/01 02:32 PM (23 years, 3 months ago) |
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> PS - Kid, there's a way to test string theory without actually using the energies needed for unification. Can't remember exactly how the test works, but it's outlined in Greene's book.
Mmm, something about the mathematics of string theory fitting in perfectly with the math behind subatomic particles? (I think). That's more abstract though, even though it's good evidence, string theory is really waiting for the hardcore proof when a particle accelerator can actually "look" at strings themselves, instead of being mathematical bodies.
I could be wrong about the test though. It's been a while since I read Greene's book.
I'm reading a cool one now, BTW, called "The End of Time", which is a theory about how time does not exist. Pretty interesting.
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trendal
J♠
Registered: 04/17/01
Posts: 20,815
Loc: Ontario, Canada
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Re: String theory [Re: Kid]
#389475 - 09/09/01 02:45 PM (23 years, 3 months ago) |
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You know what, IMO, the best chapter of Greene's book was? The one near the end where he talked about the theoretical "substance" that space/time is made out of. I had never really thought about it before. Blew me away.
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"Our culture's defined by the ones least defined..." -- The Offspring
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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.
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aluminum_can
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Re: String theory [Re: Traveller]
#389494 - 09/09/01 02:59 PM (23 years, 3 months ago) |
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can someone give me some insite on the string theory??? it sounds really interesting, but i have no clue what it is?
one plus one plus one equals three
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the little kridders of nature; they dont know that thyre ugly!
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trendal
J♠
Registered: 04/17/01
Posts: 20,815
Loc: Ontario, Canada
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Go to that site I posted.
Basically string theory is another attempt at unification theory, which is an attempt to create one theory to describe all the forces of the universe.
String theory is called string theory because instead of point particles making up matter/energy, everything is made of tiny vibrating strings.
-----------------------
"Our culture's defined by the ones least defined..." -- The Offspring
--------------------
Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.
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UrQuattro
Paradigm Shifter
Registered: 02/02/01
Posts: 378
Loc: SFCAUSA
Last seen: 11 years, 2 months
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Re: String theory [Re: trendal]
#389946 - 09/10/01 02:17 AM (23 years, 3 months ago) |
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i dont understand the theory enough to be able to give a good explanation...but just to clear one thing up...
it requires EITHER 10 OR 26 dimensions in the universe.
:o)
heh, reality is definitely more strange than one could imagine....gotta love it
Intent is everything, words are nothing but abstract representations of a subjective perception of a concept inside of one's consciousness. They are imperfect, but are always malleable... -- me
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True wisdom is the knowledge that nothing is impossible except for absolute knowledge.
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