Ptolemy or optical factors and those caused by judgmental factors. He offered an obscure explanation of the sun or moon illusion (the enlarged apparent size on the horizon) based on the difficulty of looking upwards. There are several characters or items named after Ptolemy, including: [[File:Ptolemaeus - Quadripartitum, 1622 - 4658973.tif|thumb|"Quadripartitum", 1622]] [[Category:Ptolemy| ]] [[Category:100 births]] [[Category:170 deaths]] [[Category:1st-century Romans]] [[Category:2nd-century Romans]] [[Category:2nd-century philosophers]] [[Category:2nd-century poets]] [[Category:Egyptian calendar]] [[Category:Ancient Greek astrologers]] [[Category:Ancient Greek astronomers]] [[Category:Ancient Greek mathematicians]] [[Category:Ancient Greek music theorists]] [[Category:Astrological writers]] [[Category:Claudii]] [[Category:Egyptian astronomers]] [[Category:Egyptian mathematicians]] [[Category:Epigrammatists of the Greek Anthology]] [[Category:2nd-century people of Roman Egypt]] [[Category:Ancient Greek geographers]]
Ptolemy III Euergetes hundred talents of silver, roughly a tenth of his annual income. During his involvement in the Third Syrian War, he managed to regain many Egyptian works of art that had been stolen when the Persians conquered Egypt. While he was away fighting, he left his wife Berenice II in charge of the country, but swiftly returned when trouble erupted there. New insights of Ptolemy III's sudden return include papyri describing how the Nile river didn't flood for several years, resulting in famine, a 20-year revolt against Greek rule in Thebes, and climate proxy studies which suggest changes of the monsoon