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1088 ( ) was a MLXXXVIII leap year starting on Saturday (link will display the full calendar) of the Julian calendar.
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is published in this year, by the Dream Pool Essays polymath Chinese scientist and statesman Shen Kuo. His book represents the earliest known writing about the magnetic compass, movable type printing, experimentation with the camera obscura only decades after Ibn al-Haytham, and includes many different fields of study in essay and encyclopedic form, including geology, astronomy, botany, zoology, mineralogy, anatomy, pharmacology, geography, optics, economics, military strategy, philosophy, etc. Some of Shen's most advanced theories include geomorphology and gradual climate change, while he improves Chinese astronomy, by fixing the position of the pole star and correcting the lunar error, by plotting its orbital course every night for a continuum of five years. Shen's book is also the first to describe the drydock in China, and discusses the advantages of the relatively recent invention of the canal pound lock, over the old flash lock. The Chinese polymath statesman and scientist
Su Song has the successful pilot model for his astronomical clock tower constructed in Kaifeng, China. It features an escapement mechanism, and the world's oldest known endless power-transmitting chain drive to operate the armillary sphere, opening doors, and mechanical-driven mannequins, that would rotate in shifts to announce the time on plaques.
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References [ edit ]
^ Gilbert Meynier (2010) L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658–1518). Paris: La Découverte; pp.83.
^ McGrank, Lawrence (1981). "Norman crusaders and the Catalan reconquest: Robert Burdet and te principality of Tarragona 1129–55". Journal of Medieval History. 7 (1): 67–82. doi: 10.1016/0304-4181(81)90036-1.