[Note: Do not read this article if you have learned physics or are talented in science.] Maybe you know it better as E = mc2. The only reason I called it "mass–energy equivalence" was because Wikipedia calls it that, and also I couldn't write that "squared" thing in the title.
We've all heard of Einstein's formula for relativity, E = mc2. Einstein proposed his formula in his 1905 paper, "Does the inertia of a body depend upon its energy-content?" But what does it really mean? Well, in the formula, E is energy, m is relativistic mass, and c is the speed of light in a vacuum (which is 299,792,458 meters per second).
So basically, expressing the formula in words: energy equals mass multiplied by the speed of light squared. Described using units, E (in joules) = m (in kilograms) multiplied by (299,792,458 m/s)2. Thanks Einstein!
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