Robert the Englishman
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Robertus Anglicus or Robert the Englishman was an English astronomer of the thirteenth century. He taught at the University of Montpellier, and possibly also at Paris. He is known as the author of a 1271 commentary on the ''De Sphera Mundi'' of Johannes de Sacrobosco. It includes a significant reference to the state of the art in the technology of clockwork.Timeline - Clocks
He is also the author of the paper "Astrolabii Canones", which provided important principles for measurement on spheres.


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{{DEFAULTSORT:Robertus Anglicus Medieval English astronomers 13th-century English people