String theory is a developing theory in particle physics that attempts to reconcile
quantum mechanics and general relativity. It is a contender for the theory of
everything (TOE), a manner of describing the known fundamental forces and matter
in a mathematically complete system. The theory has yet to make testable
experimental predictions, which a theory must do in order to be considered a part of
science.
Five major string theories were formulated. The main differences among them were
the number of dimensions in which the strings developed and their characteristics; all
of them appeared to be correct, however. In the mid 1990s a unification of all
previous superstring theories, called M-theory, was proposed, which asserted that
strings are really 1-dimensional slices of a 2-dimensional membrane vibrating in
11-dimensional space.
quantum mechanics and general relativity. It is a contender for the theory of
everything (TOE), a manner of describing the known fundamental forces and matter
in a mathematically complete system. The theory has yet to make testable
experimental predictions, which a theory must do in order to be considered a part of
science.
Five major string theories were formulated. The main differences among them were
the number of dimensions in which the strings developed and their characteristics; all
of them appeared to be correct, however. In the mid 1990s a unification of all
previous superstring theories, called M-theory, was proposed, which asserted that
strings are really 1-dimensional slices of a 2-dimensional membrane vibrating in
11-dimensional space.
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