Chemin faisant

• 2012-09-19

  

  brain-smudge:

  The theme of the month Scientific Illustration (today: Astronomy) is featured all this week. 
  
  The Drawing of the day #155 is by:
  
  Abū al-Rayḥān Muḥammad ibn Aḥmad al-Bīrūnī’
  Illustration from the Book of Instruction in the Elements of the Arts of Astronomy
  circa. 11th Century
  This work shows the phases of the moon. The sun shines from the right, and the moon rotates in and out of the Earth’s shadow. Modern students of astronomy find similar illustrations in their textbooks.

  
  

  Ninety-five of 146 books known to have been written by Bīrūnī, about 65 percent, were devoted to astronomy, mathematics, and related subjects like mathematical geography.

  Biruni’s major work on astrology is primarily an astronomical and mathematical text, only the last chapter concerns astrological prognostication. His endorsement of astrology is limited, in so far as he condemns horary astrology as ‘sorcery’. 

  (via scientificillustration)

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      como que no era tan “ocurantista” la era medieval no? (lease con un poco de sarcasmo… gracias)

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