The Alidade (IMAGE)

University of Sharjah

The Alidade

Caption

Alidade: An instrument Muslim scientists developed to measure angles and read values on the astrolabe. The word ‘alidade’ is of Arabic origin and is derived from العِضَادَة (al-‘idhada) or , perhaps from عَضُد (aadhud) “upper arm”.

Credit

Copyright: Museum of Islamic Art, Doha. SI.5.1999

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