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  • Reduplicative Paramnesia

    Reduplicative paramnesia is a condition in which one believes that a place has been duplicated and exists simultaneously in more than one location or that it has been relocated to another site. It is one of the delusional misidentification syndromes, which involve a belief that the identity of a person, object, or place has somehow changed. Highly rare, it is most often observed in brain injury patients who are otherwise logically sound. When was it first observed? Discuss
  • Mosques

    The mosque has traditionally been the center of social, political, and educational life in Islamic societies. Although Muhammad's house in Medina served as the prototype for Muslim houses of worship, mosques appear quite different in various parts of the world due to the influence of local architectural styles. Minarets, towers from which the call to prayer is sounded, are common features of mosques, as are courtyards surrounded by arcaded porticoes. What determines the orientation of a mosque?
  • The Midnight Sun

    The term "midnight sun" refers to the phenomena of 24 consecutive hours of sunlight north of the Arctic Circle or south of the Antarctic Circle. It occurs around the summer solstice—June 21 in the north and December 22 in the south. The odds of encountering night sunshine increase near either pole. Though beautiful, the midnight sun poses special challenges to people living in these areas, as it disrupts sleep schedules and religious rites based around the setting sun. What is "polar night"?