One of the most popular tools used by paranormal researchers is the
EMF Detector. An EMF detector measures the levels of
electromagnetic energy in a specific area. It is commonly believed
that 'ghosts' appear to have an effect on electromagnetic readings.
Therefore, researchers seek out readings that appear to be somewhat
out of the ordinary and random in occurrence.
To be more specific, these detectors provide the researcher with
accurate electromagnetic readings in terms of Gauss, v/m (Volts per
meter), and hertz. Common household appliances emit these energies
on a daily basis. For instance, the microwave in your kitchen
usually emits between 100 KHz to 2.5 GHz. Your television set emits
energy, as well as wiring in the walls of your home. Lamps,
stereos, computers, they all emit a specific amount of detectable
energy. Even humans emit what is referred to as natural electric
field. Animals emit the same form of energy. On rare occasions
people will appear to be 'invisible' to natural electric readings,
but more often than not, they are detectible.
Paranormal researchers, including myself, value collecting energy
readings because of the scientific foundation behind such
techniques. Every physical manifestation requires a certain amount
of energy to exist. Therefore, it is our belief that these energies
can be used to detect unseen entities. In many instances, these
energies are detected and have been documented. They are
unexplained in nature, and a random in occurrence. One moment they
are there, the next they are not.