If one can create energy out of mass, can one create mass out of energy?
how much energy would, theoretically an atom be equvalent to?
If we where to convert energy into mass, what kind of mass would we gain?
I've tried to answer these question based on wikipedia saying a letter weighing 1g is equvalent to 27 megatons of TNT. The answeres where so obsure that either Im claculating wrong or the numbers in wiki are too rounded-off.