<P> Mass -- energy equivalence arose originally from special relativity as a paradox described by Henri Poincaré . Einstein proposed it on 21 November 1905 , in the paper Does the inertia of a body depend upon its energy - content ? , one of his Annus Mirabilis ( Miraculous Year ) papers . Einstein was the first to propose that the equivalence of mass and energy is a general principle and a consequence of the symmetries of space and time . </P>
<P> Mass -- energy equivalence arose originally from special relativity as a paradox described by Henri Poincaré . Einstein proposed it on 21 November 1905 , in the paper Does the inertia of a body depend upon its energy - content ? , one of his Annus Mirabilis ( Miraculous Year ) papers . Einstein was the first to propose that the equivalence of mass and energy is a general principle and a consequence of the symmetries of space and time . </P>
who discovered the theory of mass energy equivalence
who discovered the theory of mass energy equivalence
Einstein
Einstein