A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 31
siblehorizon, and parallel to it, which,passing through the earths cen-ter, divides it into upper and lower hemispheres. 1. These hemispheres are distinguished as icpper and lower with reference to the ob-server only. 20. Celestial sphere ? (Relation to terrestrial ?) Axis of the heavens ?Equator… … DEFINITIONS. 27 •=^g east-ft 2. Tbe sensible horizon is half the diameter of the earth, or about 4,000 miles fromthe rational; and yet so distant are the stars, that both these planes seem to eut thecelestial arch at the same point: and we see the same hemisphere of stars above thesensible horizon…
Astronomy
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