The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 73
the surfaceof the plain. This will be evident from Fig. 65, in which amountain is depicted in the middle of a plain, whose uni-form curvature is that of a sphere. From the foot of themountain the spectator will have but a very limited horizon.Let him ascend half way, his visual radius extends, is… … Fig. 65. see numerous objects where from the lower stations the skyalone was visible. ,««*■ - ;5 - > -r-- /■ *!&S,..
Astronomy
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