The Ptolemaic Model of the Solar System

As you prepare to read Robert Grossteste's text it might be helpful for you to read this brief article from Rice University, which has a good, but short explanation of Ptolemy's understanding of the solar system (which he inherits from Aristotle and modifies). This is the model of the solar system, which Grosseteste inherits as well, shapes how he thinks about light a bit...as does the thought of Adalusian philosopher, Alpetragius, who we'll talk about briefly in class on Tuesday.  Both are mention in the introduction tot he text, and I wanted to make sure you were familiar with them.