The concept of the "Law of Conservation of Energy" typically refers to the principle that energy cannot be created or destroyed; it can only be transformed from one form to another or transferred from one system to another. However, there isn't a universally recognized "7th law of conservation of energy."
You might be referring to a specific interpretation or model in a textbook, course, or a set of principles that is not widely known. Generally, the law of conservation of energy is one central principle in physics that applies in all areas, like mechanics, thermodynamics, and even electrical engineering. It states that:
"The total energy in an isolated system remains constant, though it may change forms (e.g., from kinetic to potential energy), but it is never lost."
If you're referring to something specific in a particular context, feel free to provide more details, and I can help clarify!