Sir Isaac Newton, has originated, inter-conversion of mass and energy,
Newton has stated first of all about inter conversion of mass and
energy. Einstein has derived first mathematical equation for the same.
Newton  has quoted in his book Opticks in 1704 that
"Gross bodies and light are convertible into one another...",
[ 1 ] Sir Isaac Newton, Opticks, pp. CVX (1704; reprinted by Dover
Publications, Inc., New York, 1952).
After about 200 years Einstein  derived mathematical equation for
Newtons perception i.e. L =mc2 where =
L is light energy emitted
when mass m is annihilated and c is speed of light. It is the rare=
coincidence in between Newtons hypothesis and Einsteins m=
 Einstein, A., Annalen der Physik 18, 639 (1905).
Then from L =mc2 Einstein speculated E ==
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