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 192
so, by thecelebrated observer, Dawes. The transparency of this ring was fullyestablished in 1852 by Dawes and Lassell. There are also very decidedindications that this dark ring is also double. Questions.—273. Principal rings—their dimensions? a. Diameter of exterior ring?Thickness of rings? 274.… … TELESCOPIC VIEW OF SATXJBN.—DdlVCS. between the interior and exterior rings is also visible, as well as the linein the latter, supposed to indicate another division of the rings. b. Rotation of the Rings.—It was discovered by Sir William Her-schel, by observing certain bright spots seen on the…
Astronomy
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