### What people are saying - Write a review

#### Review: Ptolemy's Almagest

User Review - Acacio de Barros - GoodreadsBeautiful mathematical proofs and lots of empirical evidence. A must read to those thinking that serious empirical investigations were not part of science before Galileo. Read full review

#### Review: Ptolemy's Almagest

User Review - Trey Kennedy - GoodreadsPtolemy has grown on me the more I have read it. The approach is a little unclear at times, especially for those who have read Euclid. But his goal seems to be noble, and his model of the cosmos is ... Read full review

### Common terms and phrases

ABGD advance Almagest amount apogee apparent Arabic tradition arc ZH argument bright star calculations catalogue circle about right-angled column computed constellation Corrected by Manitius corresponding chords Crd arc D,Ar diameter difference earth eccentre ecliptic Egyptian calendar epicycle epicycle centre epoch equal equation of anomaly equinoctial hours equinox fixed stars given gnomon greatest distance greatest elongation Greek mss HAMA Heiberg Hence Hipparchus horizon hypotenuse hypothesis inclined circle increment interval Latitude in degrees least distance longest day Longitude in degrees lunar eclipses magnitude mean distance mean longitude mean motion mean position Mercury meridian moon moon's motion in longitude Nabonassar noon northernmost Number in constellation observations opposite parallax parallel perigee planet poles Ptolemy Ptolemy's quadrant radius ratio rear rearmost revolution right angles right-angled triangle rising-times Saturn Scorpius semi-circle shadow solar eclipses speed subtends subtraction sun's syzygy time-degrees true longitude units Venus zenith