Elements of astronomy ... with explanatory notes, and questions for examination (1855)
Brocklesby, John, 1811-1889 · New York, Farmer, Brace & co. · leaf 134
entire orbit of the earth, andcoincide at definite periods of time, with the solstices andequinoxes, slightly affecting the length of the various sea-sons by this motion. In the year 1250, the perihelioncoincided with the winter, and the aphelion with thesummer solstice, as shown in Fig. 43, the… … POSITION OF THE PERIHELION IN THE YEAR 1250, A. D. Has the motion of the perihelion and aphelion any effect on the length of the seasons ?In whut year did the perihelion coincide with the winter and the aphelion with the sum-mer solstice 1 How did the seasons then compare with each other in lengthi…
Astronomy
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