Ghost

A ghost is an alleged disembodied spirit of a dead person. Ghosts are often depicted as inhabiting haunted houses, especially houses where murders have occurred. Why some murder victims would stick around for eternity to haunt a place while others seem to evaporate is one of the great mysteries of the spirit world.

Many people report physical changes in haunted places, especially a feeling of a presence accompanied by temperature drop and hearing unaccountable sounds. They are not imagining things. Most hauntings occur in old buildings, which tend to be drafty. Scientists who have investigated haunted places account for both the temperature changes and the sounds by finding physical sources of the drafts, such as empty spaces behind walls or currents set in motion by low frequency sound waves (infrasound) produced by such mundane objects as extraction fans. Some think that electromagnetic fields are inducing the haunting experience.

Some ghost experiences may be attributed to sleep paralysis. For example, the description given by Geoff Hutchison, a miner turned medium, is typical of sleep paralysis. He says he had his first paranormal experience while he was in the Army during the 1960s when he saw a figure: "It was just a man with a big black coat and a big wide-brimmed hat. He just stood there bent over me. I couldn't move my arms or legs and had to lie there."

It is said that ghosts like to work in the dark because it's harder for people to see them than in broad daylight where their invisibility is more visible. It's also easier to deceive and scare people at night because they can't see what's going on. It's usually cooler and breezier at night, too, and both those elements assist the ghost in producing scary sounds and movements. Ghosts don't like to work in conditions where people can easily see what they are doing because then people would see them for what they are rather than for what they imagine them to be. By appearing only in the dark they can maintain their mysteriousness better. Besides, ghosts have found that many people are afraid of the dark and that fear makes their work much easier.

There are numerous groups of paranormal investigators that spend their spare time investigating allegedly haunted places. They arrive with coffee pots, flashlights, tape recorders, EMF detectors, video cameras with night vision, metal detectors, and other devices that were not designed to detect ghosts and therefore have no instructions on how to use them for that purpose. (I know. There is no equipment designed for this purpose. How could there be?) The equipment looks scientific, but does that make the investigation scientific? I'd say you're about as likely to detect a ghost with a Sony camcorder as you are to get the truth out of a house plant by hooking it up to a polygraph.