I know we can't create matter but I was thinking about it and I came up with this, unsupported, nonsense:
In a nuclear reaction the energies created are heat, light and kinetic (right?) so to create matter we'd have to reverse their direction (?) condense these into a very small volume and what was there would be heavier(?) further down on the periodic table of the elements. Does light have mass? It is bent by gravitational feilds so it must. Is this where the matter would come(?) from, the heat and compression forcing the atoms to increase in size. At the very begining is it possible all there really was was a lot of light. Why does light have a finite speed? Now to all you clever folks this must seem like the jabberings of a loon, but please entertain me.
Another thing I thought about was, is it possible to treate nuclear waste with this thinking, I know we don't have the energy needed but some research might be interesting.
Dave

• Scientists have already made matter from energy - yanniru - August 15, 2003 - 11:33 UTC