Recent Comments by ajkido 
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E=mc² is wrong?
ajkido>> ^harry:
One question they didn't really answer in this bit: why is the factor the speed of light squared? Besides it being a result of the maths, what does that relationship actually mean?
I think it comes from the Lorentz factor y = 1 / sqrt(1 - v^2 / c^2)
And why the speed of light is in the Lorentz factor is another story. I guess Feynman was spot on in that magnet video...
How a Train Stays on a Track (not as simple as you thought)
ajkidoAutomatic upvote for Dick.