Kamis, 24 Januari 2013
Unified field theory
Following his research on general relativity, Einstein entered into a
series of attempts to generalize his geometric theory of gravitation to
include electromagnetism as another aspect of a single entity. In 1950,
he described his "unified field theory" in a Scientific American article entitled "On the Generalized Theory of Gravitation".[104]
Although he continued to be lauded for his work, Einstein became
increasingly isolated in his research, and his efforts were ultimately
unsuccessful. In his pursuit of a unification of the fundamental forces,
Einstein ignored some mainstream developments in physics, most notably
the strong and weak nuclear forces,
which were not well understood until many years after his death.
Mainstream physics, in turn, largely ignored Einstein's approaches to
unification. Einstein's dream of unifying other laws of physics with
gravity motivates modern quests for a theory of everything and in particular string theory, where geometrical fields emerge in a unified quantum-mechanical setting.
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