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Al-Zarkali Saphaea or Azafea. A perfected kind of astrolabe invented by Ibn Zarqala 11th Century
Volcanic lightning is an electrical discharge caused by a volcanic eruption.
PRAGUE, CZECH REPUBLIC - DECEMBER 23, 2015: Photo of Stefanik observatory.
Volcanic lightning is an electrical discharge caused by a volcanic eruption.
Istanbul, TURKEY, September 20, 2018. Ancient Arab bronze astrolabe. Museum of The History of Science and Technology in Islam
Volcanic lightning is an electrical discharge caused by a volcanic eruption.
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