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Home > Art, Film & Photography > Iranian Inventions: Gas Laser, Kabaddi, Kariz (Water Supply), Polo, Qanat, Rubbing Alcohol, Space-Time Block Code, Tables (Board Game), Wi
Iranian Inventions: Gas Laser, Kabaddi, Kariz (Water Supply), Polo, Qanat, Rubbing Alcohol, Space-Time Block Code, Tables (Board Game), Wi

Iranian Inventions: Gas Laser, Kabaddi, Kariz (Water Supply), Polo, Qanat, Rubbing Alcohol, Space-Time Block Code, Tables (Board Game), Wi


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About the Book

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 35. Chapters: Gas laser, Kabaddi, Kariz (water supply), Polo, Qanat, Rubbing alcohol, Space-time block code, Tables (board game), Windcatcher, Yakhchal. Excerpt: A qan t (from Arabic:, in Persian: kariz) is a water management system used to provide a reliable supply of water for human settlements and irrigation in hot, arid and semi-arid climates. Qanats are also called k r z (or k r z from Persian: ) (Iran, Afghanistan, Pakistan and Central Asia, derived from Persian: ), kahan (from Persian: ), kahriz/k hriz (Azerbaijan); khettara (Morocco); galeria (Spain); falaj (United Arab Emirates and Oman); Kahn (Baloch) or foggara/fughara (North Africa). Alternative terms for qanats in Asia and North Africa are kakuriz, chin-avulz, and mayun. Common variants of qanat in English include kanat, khanat, kunut, kona, konait, ghanat, ghundat. The qanat technology is known to have been developed by the Persian people sometime in the early 1st millennium BC and to have spread from there slowly west- and eastward. The value of a qanat is directly related to the quality, volume and regularity of the water flow. Much of the population of Iran and other arid countries in Asia and North Africa historically depended upon the water from qanats; the areas of population corresponded closely to the areas where qanats are possible. Although a qanat was expensive to construct, its long-term value to the community, and thereby to the group that invested in building and maintaining it, was substantial. Cross-section of a Qanat.Qanats are constructed as a series of well-like vertical shafts, connected by gently sloping tunnels. Qanats tap into subterranean water in a manner that efficiently delivers large quantities of water to the surface without need for pumping. The water drains by gravity, with the destination lower than the source, which is typically an upland aquifer. Qanats allow water to be transported over long distances in hot dry climates without loss of much of the water to evaporation. It is very common in the construction of a qanat for the water source to be found below ground at the foot of a range of foothills of mountains, where t


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Product Details
  • ISBN-13: 9781156030745
  • Publisher: Books LLC, Wiki Series
  • Publisher Imprint: Books LLC, Wiki Series
  • Height: 246 mm
  • No of Pages: 36
  • Spine Width: 2 mm
  • Weight: 82 gr
  • ISBN-10: 1156030749
  • Publisher Date: 23 Apr 2013
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Sub Title: Gas Laser, Kabaddi, Kariz (Water Supply), Polo, Qanat, Rubbing Alcohol, Space-Time Block Code, Tables (Board Game), Wi
  • Width: 189 mm


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