Poltergeist (help·info) (from German poltern, meaning to rumble or make noise, and Geist, meaning "ghost", "spirit", or "embodiment") is a spirit or ghost that is able to move and influence objects. Poltergeists are said to be invisible.
Poltergeists are said to bother only one person at a time. This person is called their "focus". Poltergeists will bother only their focus. They are said to only last a few weeks, then will move on to another target. Often poltergeists are reported around children and adolescents. Some scientists think that poltergeists only exist in a person's head as a result of psychokinesis. They think that the "poltergeist effect" is a result of mental trauma.
In Harry Potter there is a poltergeist named Peeves. However, Peeves is not a classic poltergeist. He can be seen and does not focus on bothering just one person.
- Poltergeist: The Legacy Website
- Dehaunting Techniques
- International Journal of Parapsychology
- Princeton Engineering Anomalies Research
- Skeptic's Dictionary
- 1926 silent short film of the Eleonora Zugun poltergeist case On YouTube, with German title cards.