The storyNotice : Lines marked in red are not the truth.
In ghostlore, a poltergeist is a type of ghost or spirit that is responsible for physical disturbances, such as loud noises and objects being moved or destroyed. Most claims about or fictional descriptions of poltergeists show them as capable of pinching, biting, hitting, and tripping people. They are also depicted as capable of the movement or levitation of objects such as furniture and cutlery, or noises such as knocking on doors.
They have traditionally been described as troublesome spirits who haunt a particular person instead of a specific location. Some variation of poltergeist folklore is found in many different cultures. Early claims of spirits that supposedly harass and torment their victims date back to the 1st century, but references to poltergeists became more common in the early 17th century.
The word poltergeist comes from the German language words poltern ('to make sound' and 'to rumble') and Geist ('ghost' and 'spirit'), and the term itself translates as 'noisy ghost', 'rumble-ghost' or a 'loud spirit'. A synonym coined by René Sudre is thorybism, from Greek thorybein ('to make noise or uproar; throw into confusion').
AnswerAugust 16th, 2017: Poltergeists do exist for sure.
They do not attack humans or get directly involved with them. They can move furniture, make noises and even destroy things.
March 15th, 2021 : Some poltergeists were once humans or animals. Seems that poltergeists existed already before the first humans. You can contact them or make any kind of conversation. The are not troublesome spirits and they do not haunt on people. In fact, they do care about people.
We are not able to see them, but we are able to see their actions.
Glenluce Devil - George Sinclair
In his book Satan's Invisible World Discovered (1685), Sinclair described an alleged poltergeist incident known as the Devil of Glenluce. Sinclair described the incident as having a 'usefulness for refuting atheism.' The incident is described as having taken place at the house of weaver Gilbert Campbell in Glenluce during October, 1654. A beggar named Alexander Agnew was refused a handout by Campbell. Agnew had promised to cause the family harm and over the next two years strange phenomena were alleged to have occurred at the house. This included the mysterious cutting of warp thread, demonic voices, strange whistling noises and stones being thrown. Historian David Damrosch has noted that Alexander Agnew commonly called the 'Jock of Broad Scotland' was the first person in Scottish history to publicly deny the existence of God. He was hanged at Dumfries for blasphemy on 21 May 1656.
According to Bender, in the Autumn of 1967 he was requested to investigate disturbances in Adam's legal offices which reportedly occurred only on weekends. It was claimed that lighting fixtures exploded, swung back and forth or had their bulbs removed, heavy office furniture was shifted, and copier fluid leaked from the office copier. Additionally, the staff denied having made a large number of outgoing calls to a correct time service that were charged to the firm's telephone company account. The electric company reported evidence of malfunctions due to substantial surges in the power system, and Bender alleges that unspecified tests were made by physicists Friedbert Karger and Gerhard Zicha who reported that 'some unknown form of energy is at work.' Bender claimed that a heavy filing cabinet was reported to have been pushed across the floor by an invisible force, and that a framed painting was captured on film 'rotating around its hook.' Calling her 'a typical poltergeist', Bender believed that the emotional unhappiness of Annemarie Schaberl, a young secretary at the firm, was 'converted into psychokinesis.' He said that Schaberl told him she was frustrated with her job and distressed over a broken marriage engagement. According to Bender, the alleged poltergeist activity ceased when Schaberl left the law firm and was married.
SourcesArticle source : https://en.wikipedia.org/wiki/Poltergeist
Article source : https://en.wikipedia.org/wiki/George_Sinclair_(mathematician)
Article source : https://en.wikipedia.org/wiki/Rosenheim_Poltergeist
Video source: https://www.youtube.com/watch?v=hyyFYha9JMI