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* Warm Spot:
An area or place that for an unknown reason seems to be warmer than the surrounding areas. Paranormal investigators usually use thermometers to detect the fluctuations of temperature in a location. [See "Thermometer/Thermoscanner" for more info.]

* White Noise:
Acoustical or electrical noise of which the intensity is the same at all frequencies within a given band.

A hiss-like sound, formed by compiling all audible frequencies (used in Ganzfield experiments) [See "Ganzfield experiment" for more info.]

* Wraith:
An apparition of a living person that appears as a portent just before that person's death.