Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A generalized theory of eleven-dimensional supergravity that attempts to unify the five superstring theories
Etymologies
Examples
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In the search for answers, there is no reason to stop at M-theory, which is not strictly speaking a theory at all but an ill-defined speculation about how string theory, itself a speculation about quantum gravity, may cohere.
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Quantum physics and super-string theory—and now the latest articulation of this, called M-theory—tell us that everything in existence is composed not of points, or “dots,” of energy, but of smaller-than-minuscule circular “strings” that vibrate constantly, at differing rates.
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In the search for answers, there is no reason to stop at M-theory, which is not strictly speaking a theory at all but
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One prediction of M-theory is that there are many different universes, with different values for the physical constants.
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Our best bet for a theory of everything is M-theory an extension of string theory.
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But these are all topics that have been covered by other writers, and what we really want from Mr. Greene is the inside dope on string theory, the newer but related contender known as M-theory which postulates precisely 11 dimensions, and how these ideas lead to the multiverse.
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M-theory or no M-theory, the pieces of our universe fell into the places where they are, not because of a guiding hand and a grand design, but through mere accident.
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M-theory has eleven dimensions, ten of space and one of time.
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Some reviewers have criticized The Grand Design for basing its case on the highly speculative M-theory.
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Hawking and Mlodinow apply Feynman's ideas to M-theory, a generalized extension of string theory.
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