Physics formulas are not just math; they’re supposed to describe something about the physical universe. And this is another reason why E = mc2 sticks in people’s minds.
Here E stands for energy, m means mass, and c is the speed of light in a vacuum, or 299,792,458 meters per second.
To have them all in a simple, easy-to-remember formula implies that they’re connected to one another in a deep and profound way.
