Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York, H. Holt and Company · leaf 118
beenknown from early ages. We now know that this motion MOTION OF THE EARTH. 99 is due to the annual revolution of tlie earth round thesun. It is to the nature and effects of this annual revolu-tion of the earth that the attention of the reader is nowdirected. Our first lesson is to show tlie… … Fig. 43.—revolution of the eakth. fixed stars. This sphere, being supposed infinitely dis-tant, must be considered as infinitely larger than the circleA B O D. Suppose now that 1, 2, 3, 4, 5, 6 are anumber of consecutive positions of the earth. The lineIS drawn from the sun to the earth in the…
Astronomy
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