E=mc² isAlbert Einstein's mass-energy equivalence equation, stating that mass and energy are different forms of the same entity and are interchangeable. The equation defines energy (E) as the product of an object's mass (m) multiplied by the speed of light (c) squared. Because the speed of light is an enormous number, this equation demonstrates that a tiny amount of mass contains a tremendous amount of energy, which is released in processes like nuclear reactions.
