THanks to everyone for all the useful responses!

I wll continue to puzzle about sources, measurability, and parrellels with more familar types of energy management (can it be conducted? What forms resistors? How about transistors? To what degree can the stuff be concentrated? Can it be bottled or packaged in some fashion? In what states does it occur? Canit be transformed from one state to another? Does the law of entropy apply? Etc.).

MH