The Astronomical Observatories of Jai Singh c20.s1.8

c20.s1.8

This problem of the ‘anaphorai, is most interesting historically. Hypsicles and Hipparchus (second century B.C.) studied it and Ptolemy gave the correct solution. Paulus of Alexandria (third century of our era) animadverted on the erroneous methods² employed and exhibited the ‘anaphorai according to Ptolemy.