EVP Electronic Voice Phenomenon (EVP) refers to the alleged communication by spirits through voice recorders. One of the original pioneers in this field, Sarah Estep, claims that in the 1970s she started picking up random voices on her husband's Teac reel-to-reel recorder. She quickly realized that she had picked up spirits speaking that, oftentimes, the human ear is not sensitive enough to hear. This was a significant breakthrough in getting closer to being able to prove spirits exist and that there is life after death.

EMF Detector * EMF Detector - The Electromagnetic Field Detector, also known as an EMF, is the modern day ghost researcher's tracking device, a very important piece of equipment. With this instrument it is possible to locate and track energy sources. It will detect fluctuations in electromagnetic fields and low strength moving EMF fields that have no source. It is a common theory that spirits disrupt this field in such a way that you can tell one is present by higher than normal readings with this meter. Before using the EMF as a ghost research tool on an investigation be sure to walk around the area and take initial readings around energy sources such as light poles or electrical outlets to be sure of the readings you receive while scanning the area during the investigation. Most units when purchased come with a manual describing most household and major appliances and their corresponding electromagnetic reading. When using the EMF as a tracking device look for fluctuations of 2.0 to 7.0, this usually indicates spirit presence. Anything higher or lower is normally has a natural source.

"The K2 meter measures magnetic fields, and it's been specially calibrated for paranormal investigations. The theory behind the K2 meter is that if there's a spirit in the area, the K2 meter will pick up it's magnetic field. You can then train the spirits, supposedly, to intensify its magnetic field, therefore lighting up the lights on the meter."