Recalling from memory ... so correct at im wrong hai :- With e=mc2 Einstein used a different definition of mass than we do. The "m" was used to mean an object's mass ... but taking into account that mass increases if the object is accelerated.?Using today's definition of mass ... the "rest mass" of an object, you have to change the formula to take into account velocity. Triple Isn't that the one that some mad German tried to claim was proof of alternate realities ?? Isn't it also just a wave/partical duality test for photons - ie they're particles that diffract, like waves do ?? Sometimes I wish I'd do Physics....:D