Energy work exists since the beginning of time Where to begin and where to stop? I guess we do not know the beginning and we do not know where it will stop. When we are starting to read and investigate where to find the sources and origin of these phenomena you might...

Energy, in physics: the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. Everything is or has energy. The movement of molecules is energy. The sun gives energy in heat and light and vitamin D...