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Astro*Dictionary by Michael Erlewine





1 article for "Peregrinus, Petrus"

Peregrinus, Petrus [Astro*Index]


(1240?-?) French scholar. Born Petrus de Maricort, he was given the name Peregrinus (the Pilgrim).

He may have been a Crusader. An experimenter interested in magnets, he attempted to build a motor which would operate the planetarium designed by Archimedes. He designed a new compass, placing the needle on a pivot, and supplied a compass rose (the graduated circle) which allows greater accuracy in reading the needle's position.


Astro*Index Copyright © 1997 Michael Erlewine