A new manual of the elements of astronomy, descriptive and mathematical .. (1868)
Kiddle, Henry, 1824-1891 · New York, Ivison, Phinney, Blakeman & co.; Chicago, S.C. Griggs & co. · leaf 70
sun at either of these points produces equal days and nights. Questions.—State the phenomena connected with the suns apparent annual motion.93. What is the ecliptic? 94. What is the equinoctial? 95. What is meant by theobliquity of the ecliptic ? Why is it 23£° ? THE SUN AKD STARS. 65 orbit, or the… … P°LE OF ECLIPTIC ECLIPTIO AND EQUINOCTIAL. a. The obliquity of the ecliptic, and, of course, the inclination of theaxis, are indicated by the difference between the highest and lowestdaily culminating points of the sun, being equal to one-half of this dif-ference. For when it is at the equinoctial,…
Astronomy
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