The Planetary Theory of Ibn al-Shatir: Latitudes of the Planets

  title={The Planetary Theory of Ibn al-Shatir: Latitudes of the Planets},
  author={Victor Roberts},
  pages={208 - 219}
1) Ibn al-Shatir's planetary models for longitude predictions are non-Ptolemaic to the extent that they are expressible as combinations of uniform circular motions. Hence they are not subject to the criticisms directed toward Ptolemy in ancient and medieval times. 2) Several of the models (except for their being geostatic) are identical with those of Copernicus, who lived a century and a half after his Arab predecessor. 3) In reducing the geometric models to numerical longitude tables both Ibn… 
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A Complete Bibliography of Publications in Isis, 1960{1969
Aborigenes [78]. according [155]. Action [39, 72]. actuelle [87]. actuelles [107, 84]. Acvaghosa [8]. Aegypten [30]. Aether [126]. Agnes [42]. al [11]. Albert [45]. alcune [51]. Algerien [30]. alla