英文跟物理也可以很迷人喔💕
以下是我念的原文🏆
E=mc2，equation in German-born physicist Albert Einstein’s theory of special relativity that shows that the increased relativistic mass (m) of a body comes from the energy of motion of the body—that is, its kinetic energy (E)—divided by the speed of light squared (c2). This equation expresses the fact that mass and energy are the same physical entity and can be changed into each other.
In physical theories prior to that of special relativity, mass and energy were viewed as distinct entities. Furthermore, the energy of a body at rest could be assigned an arbitrary value.
