Recreations in astronomy : with directions for practical experiments and telescopic work (1879)
Warren, Henry White, 1831-1912 · New York : Harper & Brothers · leaf 172
part of the Peaks. one at //. casts a lung Bhadow from the mountain at 0, andtouches the tip of the one at d, which appears to a distant server as a point of light beyond the terminator. As moon revolves the conical cavity, a is illuminated on the forward Bide only: the light creeps down the… … 156 A SOLAR SYSTEM. illumination, we can easily measure the height of moun-tain and depth of crater. An apple, with excavatitand added prominences, revolved on its axis toward the
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
