The Pictorial Ptolemy and Copernicus

This is a great explanation of the Ptolemaic and Copernican systems in 36 diagrams, no equations! The accompanying text makes clear both the basics of the systems as well as the most intricate details. The often to-scale diagrams and the text explain the systems to a depth most readers would not attain by a reading and re-reading of the great works of Ptolemy and Copernicus.