E = mc^2 Explained with Worked Examples

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Einstein The purpose of these pages is to explain E = mc2 in a clear, concise and understandable way with easily followed worked examples, and with further pages examining the special theory of relativity in order to describe its background.

Albert Einstein published his Special Theory of Relativity in 1905 and in doing so discovered that mass and energy are actually the same thing, with one a tightly compressed manifestation of the other. This mass-energy equivalence has had a major impact on all our lives, although how and why isn't always obvious. While relativity has a reputation for being difficult much of it can be understood by anyone.

E = mc2

The Basics What do the E = mc2 units mean?
Solving the Equation A simple walk-through of the equation
Deriving the Equation 1 Deriving E = mc2 without calculus
Deriving the Equation 2 Deriving E = mc2 using calculus (advanced)
Energy from Radioactive Decay What is radioactive decay?
Energy from Nuclear Fission Pulling atoms apart
Energy from Nuclear Fusion Squeezing atoms together
Quiz! Think you know your stuff? Take the E = mc2 quiz!

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