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Review title: Do we need this?
Product review: The equation itself is very very easy to derive from the quite simple mathematics of Special Relativity.E=mc2 - it says that energy and mass are equivalent."c" - the speed of light ( a big number ), means that you can get a lot of energy by just converting a little mass ("m").Hence, nuclear weapons.I am all for books that popularize science, but not to the extent of taking a quite simple equation and flogging it to death.
