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In string theory, as in guitar playing, the string must be stretched under tension in order to become excited. However, the strings in string theory are floating in spacetime, they aren't tied down to a guitar. Nonetheless, they have tension.
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superstringtheory.com/basics/basic4.html
superstringtheory.com/basics/basic4.html
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String theory - Wikipedia, the free encyclopedia
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String theory is a developing branch of theoretical physics that combines quantum mechanics and general relativity into a quantum theory of gravity. The strings of string theory are one-dimensional o...
en.wikipedia.org/wiki/String_theory
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A Theory of Everything?; In this excerpt from his book The Elegant Universe, Brian Greene explains why string theory might hold the key to unifying the four forces of nature.
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www.pbs.org/wgbh/nova/elegant/
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String theory is radically changing our ideas about the nature of space, opening up the possibility that extra dimensions, rips in the fabric of space, and parallel universes actually exist. running time 10:02;
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www.pbs.org/wgbh/nova/elegant/program.html
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String theory is currently the most promising example of a candidate unified theory. We are not yet sure that it correctly describes nature, but it broadly describes a world similar to ours, and is endowed with beauty and consistency to an astonishing degree.
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theory.tifr.res.in/~mukhi/Physics/string.html
theory.tifr.res.in/~mukhi/Physics/string.html
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A brief description of the basic idea behind String Theory, written for the general public. Includes many links to other sites on this topic. ... In the last few decades, string theory has emerged as the most promising candidate for a microscopic theory of gravity. And it is infinitely more ambitious than that:
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www.nuclecu.unam.mx/~alberto/physics/string.html
www.nuclecu.unam.mx/~alberto/physics/string.html
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The theory formerly known as strings is presented in a non-technical format. ... In String Theory, the myriad of particle types is replaced by a single fundamental building block, a `string'. These strings can be closed, like loops, or open, like a hair. As the string moves through time it traces out a tube or a...
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www.damtp.cam.ac.uk/user/gr/public/qg_ss.html
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Introduction to superstrings, M-theory, D-branes, p-branes, membranes, string theory, supergravity, supersymmetry ... Introduction to this website. Online tutorial to superstring theory. Glossary of technical terms...
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www.sukidog.com/jpierre/strings/
www.sukidog.com/jpierre/strings/
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