What is poltergiest activity?

A poltergeist is a paranormal phenomenon which consists of events alluding to the manifestation of an imperceptible entity. Such manifestation typically includes inanimate objects moving or being thrown about, sentient noises (such as impaired knocking, pounding or banging) and, on some occasions, physical attacks on those witnessing the events.

While no conclusive scientific explanation of the events exists up to this day, poltergeists have traditionally been described in folklore as troublesome spirits or ghosts which haunt a particular person, hence the name (see etymology). Such alleged poltergeist manifestations have been reported in many cultures and countries

Most reports of poltergeist manifestations involve noises and destruction that have no immediate or verifiable cause. Situations include inanimate objects being picked up and thrown; noises such as knocking, rapping, or even human voices; and physical attacks on human beings, such as pinching, biting, and hitting.

Single poltergeist cases often range in duration from a few hours to several months.

Lithobolia
Lithobolia, or the Stone-Throwing Devil, is a pamphlet that records poltergeist activity that allegedly took place in the tavern of George and Alice Walton in 1682. Two copies of the pamphlet exist in the British Museum. The Waltons' tavern was located in New Castle, New Hampshire, then known as the Great Island. Lithobolia was written by “R.C.,” one Richard Chamberlain, the secretary of the colony of New Hampshire. In 1666 Chamberlain was boarding at the Walton tavern and witnessed the attack.[9] The pamphlet was later printed in London by Chamberlain in 1698. The opening reads:

"Lithobolia", or stone throwing Devil. Being an Exact and True account (by way of Journal) of the various actions of infernal Spirits or (Devils Incarnate) Witches or both: and the great Disturbance and Amazement they gave to George Walton's family at a place called Great Island in the county of New Hampshire in New England, chiefly in throwing about (by an Invisible hand) Stones, Bricks, and Brick-Bats of all sizes, with several other things, as Hammers, Mauls, Iron-Crows, Spits, and other Utensils, as came into their Hellish minds, and this for space of a quarter of a year."

Borley Rectory 1937
William Roll, Hans Bender, and Harry Price are perhaps three of the most famous poltergeist investigators in the annals of parapsychology.[citation needed] Harry Price investigated Borley Rectory which is often called "the most haunted house in England

Rosenheim, Germany (1967)
Dr. Friedbert Karger was one of two physicists from the Max Planck Institute who helped to investigate perhaps the most validated poltergeist case in recorded history. Annemarie Schneider, a 19-year-old secretary in a law firm in Rosenheim (a town in southern Germany) was seemingly the unwitting cause of much chaos and controversy in the firm, including disruption of electricity and telephone lines, the rotation of a picture, swinging lamps which were captured on video (which was one of the first times any poltergeist activity has been captured on film), and strange sounds that sounded electrical in origin were recorded. Karger stated that "these experiments were really a challenge to physics" and the disturbances "could be 100 percent shown not to be explainable by known physics."[11] Fraud was not proven despite intensive investigation by the physicists, journalists and the police. The effects moved with the young woman when she changed jobs until they finally faded out, disappeared, and never recurred.