Orr, M. A. (Mary Acworth) · London and Edinburgh, Gall and Inglis · leaf 183
ther periodical irregularity to those already known.Perhaps his feelings were somewhat mixed when thishappened, his pride and pleasure in his importantdiscovery being counter-balanced by the consciousnessthat it would still further complicate his lunar theory.Our satellite is acted upon by… … Fig. 33. Apparent Variation in the Size of the Sun. [To face p U6 Two half pliotogiaplis of the Sun, taken at Kodaikanal Obseivatoiy. The smaller wastaken two days before apogee, the lai-ger on the day of perigee. PTOLEMY. 147 paratively near. Ptolemys discovery was a differencein her speed at full…
Dante Alighieri, 1265-1321 · Astronomy, Ancient · Astronomy, Medieval · Early maps
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
