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Contents
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PAGE
§ 68. | Purbach and Regiomontanus : influence of the original Greek authors : the Nürnberg school : Walther : employment of printing : conflict between the views of Aristotle and of Ptolemy : the celestial spheres of the Middle Ages : the firmament and the primum mobile |
86 |
§ 69. | Lionardo da Vinci : earthshine . Fracastor and Apian : observations of comets. Nonius. Fernel's measurement of the earth |
90 |
CHAPTER IV.
92-124 |
§ 70. | The Revival of Learning |
92 |
§§ 71-4. | Life of Coppernicus : growth of his ideas : publication of the Commentariolus : Rheticus and the Prima Narratio : publication of the De Revolutionibus |
93 |
§ 75. | The central idea in the work of Coppernicus : relation to earlier writers |
99 |
§§ 76-9. | The De Revolutionibus. The first book : the postulates : the principle of relative motion, with applications to the apparent annual motion of the sun, and to the daily motion of the celestial sphere |
100 |
§ 80. | The two motions of the earth : answers to objections |
105 |
§ 81. | The motion of the planets |
106 |
§ 82. | The seasons |
108 |
§ 83. | End of first book. The second book : decrease in the obliquity of the ecliptic : the star catalogue |
110 |
§ 84. | The third book : precession |
110 |
§ 85. | The third book : the annual motion of the earth : aphelion and perihelion. The fourth book : theory of the moon : distances of the sun and moon : eclipses |
111 |
§§ 86-7. | The fifth and sixth books : theory of the planets : synodic and sidereal periods |
112 |
§ 88. | Explanation of the stationary points |
118 |