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Petrus Peregrinus of Maricourt
(fl. 13th century)A physician and possibly crusader in the service of Charles I of Anjou, who dabbled with perpetual motion using magnetism, which led him to investigate the properties ...
travel and mobility
Travel and mobility were vital dimensions to life during the MA. By the central MA, diplomats, merchants, military and mendicant orders, and Jewish communities had established networks linking their ...
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