E=mc^2 is perhaps the most famous equation in all physics, but very few people actually know what the equation means, or where it comes from. In this video I would like to show one method for deriving this equation, as well as provide some insight into what the equation actually means. Along the way we will also touch upon some of the most fascinating features of Einstein’s theory of special relativity, including time dilation, the reason why nothing can travel faster than the speed of light, and the relationship between energy and momentum for massless particles.

References:
Relativity Albert Einstein
The Meaning of Relativity Albert Einstein
Why does E=mc^2 Cox and Forshaw
One, Two, Three, Infinity Gamow
How to Teach Relativity to your dog Orzel

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