In psychiatry, the definition is implies that the belief is pathological. A hallucination is a perception in the absence of a stimulus. In a stricter sense, hallucinations are defined as perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception.
Warsaw Uprising. For other uses, see Warsaw Uprising (disambiguation). The Warsaw Uprising (Polish: Powstanie Warszawskie; German: Warschauer Aufstand) was a major World War II operation by the Polish resistance Home Army (Polish: Armia Krajowa) to liberate Warsaw from German occupation.
The city is the seat of the Polish Academy of Sciences, Warsaw National Philharmonic Orchestra and the University of Warsaw. The historic city-centre of Warsaw with its picturesque Old Town in 1980 was listed as a UNESCO World Heritage Site.