Final answer:
The Islamic plainispheric astrolabe was an astronomical instrument used in the Islamic world during the medieval period. It enabled astronomers to determine the positions of celestial bodies, measure time, and determine the direction of Mecca for prayer.
Step-by-step explanation:
The Islamic planetary astrolabe, also known as the plainispheric astrolabe, was an astronomical instrument used in the Islamic world during the medieval period. It was a unique development of the ancient Greek astrolabe, specifically designed for celestial observations and calculations in Islam. The plainispheric astrolabe enabled astronomers to determine the positions of celestial bodies, measure time, and determine the direction of Mecca for prayer.
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