Great Books of the Western World, Band 16

according Accordingly additosubtraction anomalistic difference anomaly apogee apparent movement apsis arc BC arc EG Bull chord 2 arc circle about right column Crab degrees demonstrated diameter distance drawn Earth east eastern eccentric circle eccentric's ecliptic Egyptian Egyptianwise elongation epicycle epicycle's centre equal equator equatorial hours equinoctial fixed stars given gnomons greater greatest Hipparchus horizon hypothesis hypt interval irregular Jupiter latitude latitudinal libration likewise longest day longitude longitudinal lunar magnitude Mars mean movement mean position Mercury meridian meridian circle middle moon moon's move Nabonassar nearly Noon northern observations opposite orbital circle parallax parallel passage perigee perpendicular planet poles Ptolemy quadrant radius ratio regular movement revolution right angles right triangle Saturn Scorpion semicircle shadow side solar days southern sphere spring equinox straight line subtending subtraction summer tropic sun's syzygies things Twins Venus Water Bearer