What is e=m×c×c

In physics, mass–energy equivalence states that anything having mass has an equivalent amount of energy and vice versa, with these fundamental quantities directly relating to one another by Albert Einstein's famous formula:

 E = mc ²

In the equation, the increased relativistic mass (m) of a body times the speed of light squared (c ²) is equal to the kinetic energy (E) of that body. Proof of Albert Einstein's special-relativity equation E = mc ².

c stands for the speed of light in vacuum, ( which is: c = 2.99792458 10⁸ m/s )

Anything having energy exhibits a corresponding mass <i>m</i> given by its energy <i>E</i> <i>divided</i> by the speed of light squared <i>c</i>². Because the speed of light is a very large number in everyday units, the formula implies that even an everyday object at rest with a modest amount of mass has a very large amount of energy intrinsically. Chemical, nuclear, and other energy transformations may cause a system to lose some of its energy content (and thus some corresponding mass), releasing it as light or heat, for example.