Nsgarch: I keep reading and trying to understand your repsonse. If the molecules that make up the metal simply pack more tightly, then that would say that they take up less total space.
That is, if they were some distance apart, and now are closer together, then the total outside dimension of the metal must have changed or some part of the original metal would now have no molecules and would be empty space, or then, really be made up of nothing - unless you are saying the cryo process will also create new molecules to fill that space??
That is, if they were some distance apart, and now are closer together, then the total outside dimension of the metal must have changed or some part of the original metal would now have no molecules and would be empty space, or then, really be made up of nothing - unless you are saying the cryo process will also create new molecules to fill that space??