I use mu-metal foil to shield my low level phono step up transformer from noise from nearby HVAC equipment. Nothing special there, transformers emit em radiation that can induct undesirable noise into electric circuits. That's basic electronics.
Thing is I read that the theory behind benefits of Schumann is pretty much entirely based on its effects on humans as part of the earth's environment. Nothing about its effects on electric circuits or that being a good thing.
Just saying. IT's an interesting theory, but again not a hard one to test and support or not. Like a transformer, close unshielded proximity to an electric circuit should have a greater effect than farther away , and there is always some range limit involved.
Thing is I read that the theory behind benefits of Schumann is pretty much entirely based on its effects on humans as part of the earth's environment. Nothing about its effects on electric circuits or that being a good thing.
Just saying. IT's an interesting theory, but again not a hard one to test and support or not. Like a transformer, close unshielded proximity to an electric circuit should have a greater effect than farther away , and there is always some range limit involved.