Brocklesby, John, 1811-1889. [from old catalog] · New York, Sheldon and company · leaf 107
PRECESSION EXPLAINED. P1 is always at the same distance from P revolving as itdoes in a circle about P. 148. The following illustration may tend still further FIG. 32 … PRECESSION EXPLAINED. to elucidate this subject. Take a tumbler DC, Fig. 32,partly filled with water. The level surface of the water, Illustrate the subject still further by the aid of Fig. 32 5 96 THE EARTH VIEWED ASTRONOMICALLY. EF, we will call the plane of the ecliptic, and the end Aof a thread…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
