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 194
inated. In each ofthese cases, the rings must disappear or present only a thread oflight. They disappear also when their unillumined side is turned Questions.—275. Appearance of the rings? When do they disappear? a. Whenis the edge only seen ? When is the dark side presented ? SATURN. 189 toward… … SATXJKN IN DIFFEBENT PABT8 OF ITS OKBIT. Fig. 109 represents Saturn in different parts of its orbit, the direction ofthe axis and the position of the plane of the rings constantly remaining thesame. At A or E, the time of the planets equinox, the plane of the ringspasses through the sun, so that…
Astronomy
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