E = mc 2 definition. An equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c 2 is the speed of light squared, or multiplied by itself. read more
This concept is expressed in the center of mass equation below. The center of mass is at x = 0 in the left half of the equation and it is still at 0 after the photon strikes the opposite wall as described in the right half of the equation. read more
E = mc2 definition. An equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c2 is the speed of light squared, or multiplied by itself. read more
In the equation E=mc², e stands for energy, m stands for mass and c² stands for the speed of light squared. First proposed by Albert Einstein, this equation demonstrates that energy and matter are interchangeable. read more