. The Boston school compendium of natural and experimental philosophy .. . part of each orbit which is above the plane is shown by a whiteline; that which is below it, by a dark line. That part of the orbit What does fig. 134 represent ? ASTRONOMY. 195 of each planet the white and of the planet. Fig. where it crosses the ecliptic, or, in other words,wheredark lines in the figure meet, are called the nodes[From the Latin nodus, a knot or tie.] Figure 135 represents a section of the plane of theecliptic, showing the inclination of the orbits of theplanets. As the zodiac extends only eight
. The Boston school compendium of natural and experimental philosophy .. . part of each orbit which is above the plane is shown by a whiteline; that which is below it, by a dark line. That part of the orbit What does fig. 134 represent ? ASTRONOMY. 195 of each planet the white and of the planet. Fig. where it crosses the ecliptic, or, in other words,wheredark lines in the figure meet, are called the nodes[From the Latin nodus, a knot or tie.] Figure 135 represents a section of the plane of theecliptic, showing the inclination of the orbits of theplanets. As the zodiac extends only eight degrees oneach side of the ecliptic, it appears from the figurethat the orbits of some of the planets are wholly inthe zodiac, while those of others rise above and de-scend below it. Thus, the orbits of Juno, Ceres, andPallas rise above, &c, while those of all the otherplanets are confined to the zodiac. When a planet or heavenly body is in that part ofits orbit which is near any particular constellation,it is said to be in that constellation. Thus in , the comet of 1680 appears to approach the sunfrom the constellation Leo. 457. The perihelion* and aphelion* ofa heavenly body express its situation withregard to the sun. When a body is nearestto the sun, it is said to be in its perihelio
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Keywords: ., bookcentury1800, bookdecade1830, booksubjectphysics, bookyear1837
