A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 24
DEFINITIONS. 19 GREAT AND LESS CIRCLES. … MERIDIAN. The equator of a sphere is sometimescalled a Great Circle, because no largercircle can be drawn upon its surface. A Less Circle is one that divides asphere into two unequal parts. In the cut, the circles are represented in perspective. TheGreat Circle-embraces the middle of the sphere,…
Astronomy
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