On the Revolutions of the Celestial Spheres ... |
Contents
Book I | 130 |
HOW LAND AND WATER MAKE UP A SINGLE GLOBE | 202 |
THE MOVEMENT OF THE CELESTIAL BODIES IS REGULAR | 207 |
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Common terms and phrases
according Accordingly additive or subtractive Al Battani anomaly of parallax apogee apparent movement approximately apsides ascension CHAPTER chord subtending twice circumference clear common section comprehend demonstrated described diameter earth eccentric circle ecliptic Egyptian calendar epicycle equal equator fixed stars greater half the chord Hence highest apsis Hipparchus horizon inclination irregular Jupiter Kalends latitude libration longitude Lord lowest apsis lunar mean movement mean position Mercury meridian meridian circle midnight moon move movement of anomaly movement of parallax obliquity observations orbital circle perigee planet pole precession proportional minutes Ptolemy quadrant ratio regular movement remaining angle remaining side revolution right angles right ascension Saturn semicircle shadow similarly solar opposition solstice sphere straight line subtending twice arc subtractive difference sun and moon things third triangle velocity Venus vernal equinox vespertine whole angle zodiac