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How long are strings? Rate Topic: -----

#1 29 December 2011 - 04:52 PM Airbrush 


Molecule
According to String Theory, all matter is composed of vibrating "strings". What are the size and dimensions of a string? I suppose they are 2 dimensional with no thickness, only length, as the name implies. How long would the string be in Planck Lengths? (A Planck length is approx 10^-20 of the diameter of a proton.)
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#2 29 December 2011 - 05:03 PM imatfaal 


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Primate

View PostAirbrush, on 29 December 2011 - 04:52 PM, said:

According to String Theory, all matter is composed of vibrating "strings". What are the size and dimensions of a string? I suppose they are 2 dimensional with no thickness, only length, as the name implies. How long would the string be in Planck Lengths? (A Planck length is approx 10^-20 of the diameter of a proton.)


First off - they are one dimensional, ie they have length and nothing else. I think the length is around the planck scale. Here is a good site for the beginner - frankly I am unconvinced of the utility of studying any string theory other than for the astounding maths these guys use, and in a heuristic text-based format I think it is a bit of a waste of time. The standard model of particle physics is amazing enough to be going on with, let alone another level of abstraction.
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#3 29 December 2011 - 06:47 PM Airbrush 


Molecule

View Postimatfaal, on 29 December 2011 - 05:03 PM, said:

First off - they are one dimensional, ie they have length and nothing else. I think the length is around the planck scale. Here is a good site for the beginner - frankly I am unconvinced of the utility of studying any string theory other than for the astounding maths these guys use, and in a heuristic text-based format I think it is a bit of a waste of time. The standard model of particle physics is amazing enough to be going on with, let alone another level of abstraction.


Thanks for your explanation!
When in doubt, Wiki it out.

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