Bronfenbrenner's final level is the macrosystem, which is the largest and most remote set of people and things to a child but which still has a great influence over the child.
Term EMF is acronym for Electro-Motive-Force , that is a Force that Moves Electric Charge. It is not implied by the name of that term whether the origin of the Force is elecrostatic, magnetic , thermoelectric , or electrochemical.
PEMF stands for Pulsed ElectroMagnetic Fields. and the purpose of this website is to elaborate in layman's terms what is behind PEMF devices and their specifications. PEMF technology is also called pulsed electromagnetic field therapy or in short PEMFT.