Author: Miss Cellania / Source: Neatorama

Have you ever experienced unexplained phenomena that gave you the impression of a ghost? A sudden cold chill, a feeling of dread, unexpected sounds in the night? Folklore and horror films give us an easy explanation- your house is haunted by a dead person who never left.
There might be a more scientific reason for that feeling, like infrasound.Infrasound is sound at levels so low humans can’t hear it (though other animals, like elephants, can). Low frequency vibrations can cause distinct physiological discomfort. Scientists studying the effects of wind turbines and traffic noise near residences have found that low-frequency noise can cause disorientation [PDF], feelings of panic, changes in…
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