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Theory of relativity
noun
•
In Physics & Relativity:
The
th
eories of
special relativity
and
general relativity
, two
th
eories in
physics
developed
mainly
by
Albert
Einstein
at
th
e
beginning
of
th
e 20th
century
from which several important
results
such as
th
e
equivalence
of
matter
and energy and
th
e
Einstein field equations
are
derived
.
Sourced from
Wiktionary
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