Elements of astronomy: accompanied with numerous illustrations, a colored representation of the solar, stellar, and nebular spectra, and celestial charts of the northern and the southern hemisphere (1875)
Lockyer, Norman, Sir, 1836-1920 · New York, D. Appleton and company · leaf 98
orthern summer. This and night? What other motion has the Earth? 174. What is the shape of allthe planetary orbits ? How may ellipses differ? What kind of ellipses are theplanetary orbits ? 175. How is the Sun situated, as regards these ellipses ?When is a planet said to be in perihelion, and when… … greater near-ness to theSun intensifiesthe heat of thesouthern sum-mer, and ac-counts for thefact that thetemperature ofthis season ishigher in Aus-tralia andSouthern Afri-ca than in cor-responding lat-itudes north Fig. 40.—The Eakths Okbit. S, the Sun; P, the Earthof the eaua- in perihelion; J.,…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
