Mattison, Hiram, 1811-1868 · New York, Huntington and Savage, Mason and Law · leaf 85
ght received inthe Northern Hemisphere in July and January,may be illustrated by the accompanying figure, in which the rays of light at different seasons are represented to the eye. Tn Januarythey are seen to strike the Northern Hemisphere obliquely; and consequently thesame amount of light is… … 356. What is the difference of the Earths distance in July andJanuary? About three millions of miles. 357. Does not this in reality affect the general temperature ofthe Earth 7 It undoubtedly does; but the variation of 3,000,000miles is so slight when compared with the whole dis-tance of the Sun,…
Astronomy
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