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Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Nasīr_al-Dīn_al-Tūsī — Please support Wikipedia.
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1 news items

 
Times Higher Education
Wed, 20 Aug 2014 16:02:02 -0700

In the Commentariolus and De revolutionibus he used a device for turning two circular motions into a straight line that was invented by Nasīr al-Dīn al-Tūsī (d.14), founder of the observatory at Marāgheh in modern-day Iran. The Commentariolus uses ...
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