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do you know if the "ghost hunters" were measuring magnetic, electric, and or radiated fields?
If you can determine what they were measuring and can borrow a known good instrument, then run your own measurements and compare your measurements with known scientific limits for personal safety. Also try to determine what were the measurement levels found by the "ghost hunters".
I think i have been exposed to much higher rf levels than what most individuals have. When i was young i received radio diathermy treatments. These were probably about 100 to 1000 w transmitters in the 30 mhz range and were intended to warm the interior of the body. In the navy we had problems with our main battery fire control radar. The antenna array was for the forward 16" guns and was mounted on top of the conning tower. I setup my self made test system that i put a few feet in front of the antenna. I was up there using a scope to monitor the signal. This antenna use a motor driven spark gap switch to connect the transmitter output to one part of the array at a time. Found the problem to be water inside the switch mechanism. I was exposed to high power radiation in this case. People exposed to this type of radiation for long periods are known to have related problems. My time of exposure was not great, but the power level was high.
I believe if you take a fluorescent bulb and go below a high voltage transmission line that the bulb will light. I have never tried this. However, on numerous occasions i have demonstrated the illumination of a fluorescent lamp in front of an antenna connected to a 2 meter transmitter. With a 25 w 2 meter transmitter and a beam antenna i can be a number of feet away and it will illuminate. It is one way to provide a qualitative illustration of the beam shape. I doubt that you can go around any normal house carrying an unattached fluorescent bulb and have it light up. The lighting of a fluorescent lamp will be from an electric field below the power lines and not a magnetic field.
You might ask the home owner why there should be any correlation between an electric field and ghosts. But this probably would not have any effect on a person that was afraid of ghosts. If ghosts exist, then i believe they would be associated with some field of which we have no present knowledge of its existence, and this kind of field would probably not be limited by the speed of light.
It is easy to find moderate electric fields in my house, magnetic fields are very low, and rf is also low. The electric fields come from my fluorescent lamps.
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