EMF = Electromagnetic field and EMR = Electromagnetic radiation but what are they actually and how are they related?
Military & Aerospace Electronics Rugged computer able to combine classified and non-classified data introduced …Military & Aerospace Electronics… an independent computer for each side (red/black) in the same enclosure — sharing only the secure internal DC power — and uses a proprietary mechanical system to isolate red from black domains electrically and from any electromagnetic force (EMF)…Rugged computer able to combine classified and non-classified data introduced … – Military & Aerospace Electronics
Hopefully you understand EMF better. The links below provide more information.
Reducing EMF radiation from the wireless router