QUIZ: Can We Guess Your Education Level?

What does the “m” stand for in E = mc2?

Retry Correct Incorrect The twentieth-century physicist Albert Einstein devised this equation, in which E stands for units of energy, m stands for units of mass, and c2 is the speed of light squared.

Next

Universal History Archive/Getty Images

Universal History Archive/Getty Images

What does the “m” stand for in E = mc2?

• Mass
• Measurement
• Meter
• Millimeter