John of Casale

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Johannes von Casale (Giovanni da Casale) († around 1375) was a Franciscan and natural philosopher . He began his theological studies in Genoa, was a lecturer at the Franciscan College in Assisi from 1335 to 1340 and in Cambridge from 1340 to 1341, where he got to know the mathematical and physical conceptual structure of the Oxford Calculators .

Returned to Italy, he taught in Bologna from 1346 to around 1352, where he wrote the treatise Quaestio de velocitate ("On speed of variable movement" [Venice 1505]) around 1346 . With this he provided a graphic analysis of the movement of accelerated bodies. His mathematical and physical ideas influenced the scientists at the University of Padua .

Pope Gregory XI. appointed Johannes von Casale as papal legate at the court of King Frederick III. of Sicily . John died around 1375.

literature

  • Marshall Clagett : The Science of Mechanics in the Middle Ages . University of Wisconsin Press, Madison 1959 (pp. 332 f., 382 ff., 644)
  • Anneliese Maier : The "Quaestio de velocitate" of Johannes von Casale, OFM In: Archivum franciscanum historicum vol. 53 (1960) pp. 276-306