Can anyone tell me wether electromagnetic field has any effect on ghosts?
The common belief is that ghosts put off, if not are made of, an electromagnetic field. Another field could strengthen them, as they must draw energy from the area around them. Conversely, if the field is strong enough it could, theoretically hinder their ability to manifest. Of course this is all theory, so your conclusions are your own, but I hope they are based of the scientific studies that have been done. Good luck, this is a difficult science because many don’t believe it is a science. Follow the scientific method, and happy hunting.