Case Report on Anomalous Electro-Magnetic Signals

CIn Gifu province of Japan in 2000, many residents of an apartment claimed that enigmatic phenomena had occurred repeatedly: for example, strange sounds, the apparition of a ghost, movement of materials, and electric tools working without a power supply. The authors tried to detect specific signals of magnetic fields there. The investigation was conducted from November 15th to 17th in 2000. The magnetometers were of the semiconductor type (10 nT, DC-10 kHz) and the flux-gate type (1nT, DC-20 Hz). The outputs of the magnetometers were recorded by a DAT tape recorder at 2 kHz, and then the outputs of the DAT recorder were recorded by a computer at 200 Hz through a universal interface unit and an AD converter. The results of the three-day investigation showed no anomalous magnetic signals. However, two spontaneous anomalous electric signals were observed. An analysis of 14-minute data includes one of the signals showed small two peaks in frequency spectrum. The peaks shifted by 3-5 Hz per minute, and then crossed each other in the spectrum. The anomalous electric signal appeared resonantly after cross-over. However; the reason for this phenomenon was not identified.