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 I Soter also have been his wife: During the Susa weddings, Ptolemy married Persian noblewoman Artakama, as ordered by Alexander the Great. Around 322 BC, he married Eurydice, daughter of Antipater, regent of Macedonia. They had at least four children before she was repudiated: Ptolemy married once more to Berenice, Eurydice's cousin, who had come to Egypt as Eurydice's lady-in-waiting with the children from her first marriage to Philip. She had three children with Ptolemy: Ptolemy I was the founder of the Ptolemaic dynasty. Among its members was Cleopatra VII, the last pharaoh to rule Egypt prior to Roman control. Ptolemy himself