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Invisibledblaney
Human Being

Registered: 10/03/04
Posts: 7,894
Loc: Here & Now
String Theory
    #4159288 - 05/10/05 10:07 PM (12 years, 3 months ago)

I searched but couldn't find any discussions about this, other than the Speed of Light thread from last week, which skirted some of the same topics.

So, what do you all think about it? Is the universe actually made up of ultra-miniscule strings vibrating and creating all matter and everything as we know it?


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"What is in us that turns a deaf ear to the cries of human suffering?"

"Belief is a beautiful armor
But makes for the heaviest sword"
- John Mayer

Making the noise "penicillin" is no substitute for actually taking penicillin.

"This country, with its institutions, belongs to the people who inhabit it. Whenever they shall grow weary of the existing government, they can exercise their constitutional right of amending it, or their revolutionary right to dismember or overthrow it." -Abraham Lincoln


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InvisibleDieCommie

Registered: 12/11/03
Posts: 28,362
Re: String Theory [Re: dblaney]
    #4159423 - 05/10/05 10:33 PM (12 years, 3 months ago)

I doubt anyone here is qualified enough to answer that. Even the dude who popularized it acknowledges that if you cant test it then it is philosophy not physics.


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Invisibledblaney
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Registered: 10/03/04
Posts: 7,894
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Re: String Theory [Re: DieCommie]
    #4159436 - 05/10/05 10:35 PM (12 years, 3 months ago)

Yeah that is the major problem: there is almost no conceivable way to test it. However, the same problem existed for other theoreticians in past centuries.


--------------------
"What is in us that turns a deaf ear to the cries of human suffering?"

"Belief is a beautiful armor
But makes for the heaviest sword"
- John Mayer

Making the noise "penicillin" is no substitute for actually taking penicillin.

"This country, with its institutions, belongs to the people who inhabit it. Whenever they shall grow weary of the existing government, they can exercise their constitutional right of amending it, or their revolutionary right to dismember or overthrow it." -Abraham Lincoln


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InvisibleDieCommie

Registered: 12/11/03
Posts: 28,362
Re: String Theory [Re: dblaney]
    #4160008 - 05/11/05 01:08 AM (12 years, 3 months ago)

Maybe in a few centuries it will be testable.


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Offlinebigbluesky
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Registered: 05/11/05
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Last seen: 11 years, 11 months
Re: String Theory [Re: DieCommie]
    #4160792 - 05/11/05 06:52 AM (12 years, 3 months ago)

well from what I know string theory proposes there are at least 11 dimensions. Matter and energy vibrate at different frequencies which gives way to unique particles. It was created to unify general relativity (for big things) and quantum mechanics (small things) as the physics doesn't mix well. This is very important for black holes as they are both big and small. M-theory is the new frontier of physics but the math is so complicated nobody understands it!


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InvisibleDieCommie

Registered: 12/11/03
Posts: 28,362
Re: String Theory [Re: bigbluesky]
    #4161668 - 05/11/05 01:50 PM (12 years, 3 months ago)

Its not too complicated for Cyber-Witten!


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InvisibleDiploidM
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Registered: 01/09/03
Posts: 19,274
Loc: Rabbit Hole
Re: String Theory [Re: dblaney]
    #4161872 - 05/11/05 03:01 PM (12 years, 3 months ago)

Yeah that is the major problem: there is almost no conceivable way to test it. However, the same problem existed for other theoreticians in past centuries.

The main obstacle to testing past theories was the cost of building large-enough accelerators; there were never any intrinsic limits in physics that prevented their tests.

This isn't the case with Strings. The reasons we (almost certainly) will never be able to test String Theory goes far deeper.


The Planck Length is unimaginably tiny. To get some idea of how small, consider that quarks are about 1,000 times smaller than protons. The Planck Length is 100 quadrillion times smaller than a quark. Lengths smaller than this do not make sense.

Speaking of a length smaller than the Planck Length is like speaking of a time interval shorter than zero. This is like saying that an event takes less than zero time to occur, i.e. faster than instantly.

A seminal principal of modern Quantum Mechanics is Heisenberg's Uncertainty Principle which, simplified, states that it is not possible to know both the position and the momentum (mass, speed, and direction) of a particle exactly. The more precisely you measure one parameter, the less you can know about the other. This means that as you zero in on a particle's exact position down to the Planck Length, the uncertainty in your knowledge of its momentum approaches infinity.

The practical upshot of this is that, since Strings are smaller than the Planck Length, experiments to probe them are (almost certainly) totally impossible.  :mushroom2:


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Republican Values:

1) You can't get married to your spouse who is the same sex as you.
2) You can't have an abortion no matter how much you don't want a child.
3) You can't have a certain plant in your possession or you'll get locked up with a rapist and a murderer.

4) We need a smaller, less-intrusive government.


Edited by Diploid (05/11/05 04:51 PM)


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InvisibleCorporal Kielbasa
 User Gallery

Registered: 05/29/04
Posts: 17,029
Re: String Theory [Re: dblaney]
    #4179233 - 05/15/05 07:17 PM (12 years, 3 months ago)

look into the M theory


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InvisibleDieCommie

Registered: 12/11/03
Posts: 28,362
Re: String Theory [Re: Corporal Kielbasa]
    #4180664 - 05/16/05 01:17 AM (12 years, 3 months ago)

M theory is just the union of the 5 different string theories. M theory is string theory.

Look cyber-witten... Its cool!!!

<sorry i just find this picture hilarious>


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OfflineAnjaba
Yet to trip....
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Registered: 01/12/05
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Re: String Theory [Re: dblaney]
    #4188187 - 05/17/05 08:12 PM (12 years, 3 months ago)

I prefer the Holographic Universe theory, you should check it out.


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Invisibledblaney
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Registered: 10/03/04
Posts: 7,894
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Re: String Theory [Re: Anjaba]
    #4191957 - 05/18/05 06:45 PM (12 years, 3 months ago)

The link I found (http://www.crystalinks.com/holographic.html) describes quantum entanglement, a very intriguing phenomenon, but it is plausible under quantum mechanics. Things on the subatomic level are quite a bit different than things in our level.


--------------------
"What is in us that turns a deaf ear to the cries of human suffering?"

"Belief is a beautiful armor
But makes for the heaviest sword"
- John Mayer

Making the noise "penicillin" is no substitute for actually taking penicillin.

"This country, with its institutions, belongs to the people who inhabit it. Whenever they shall grow weary of the existing government, they can exercise their constitutional right of amending it, or their revolutionary right to dismember or overthrow it." -Abraham Lincoln


Post Extras: Print Post  Remind Me! Notify Moderator
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