@uraanresearch: Banu Musa Designed an Underwater Mechanical Claw 1,200 Years Ago. The Banu Musa brothers described a rope-operated grab with hinged jaws that could descend open, close around an underwater object, and remain shut while being lifted. Its basic principle is strikingly similar to a modern clamshell grab. #BanuMusa #IslamicHistory #MechanicalEngineering #MedievalTechnology #HistoryTok