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Charles I of Anjou (1226—1285)

motion

compass

Roger Bacon (c. 1214—1292) philosopher and Franciscan friar

 

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Petrus Peregrinus of Maricourt


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(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 ...


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