Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
the sun as, at A, it appears to be above it; and, therefore, it would appear to be at B; and so on. This apparent motion of an interior planet, from west to east and from east to west, is called oscillation. These oscillations do not take place in half the time of the planets periodic revolution,… … 88S. Figure 5. Inclination of the moons orbit to theplane of the ecliptic.—The plane of the moons orbit is very nearthat of the ecliptic. It departs from the latter only 5° 8 48. Let the dotted line represent the plane of the earths orbit (which,of course, coincides Avith the plane of the…
Physics · Astronomy
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