. Africa . etraces Ms steps from east towest, he finds himself conversely a day in advance. 3. The Seasons, Equinoxes, and Solstices. In its revolution round the sun the Earths axis is notperpendicular to the plane of its orbit. It has been ascer-tained that the Earths axis is inclined to the plane of itsorbit round the sun at an angle of nearly 2 3 J0. The courseof the Earth round the sun is called the Ecfyrtic, becausesolar and lunar eclipses occur only when the sun and moonare on the same line with the earth on the plane of its orbit of the Earth, again, is itself not quite a perf
. Africa . etraces Ms steps from east towest, he finds himself conversely a day in advance. 3. The Seasons, Equinoxes, and Solstices. In its revolution round the sun the Earths axis is notperpendicular to the plane of its orbit. It has been ascer-tained that the Earths axis is inclined to the plane of itsorbit round the sun at an angle of nearly 2 3 J0. The courseof the Earth round the sun is called the Ecfyrtic, becausesolar and lunar eclipses occur only when the sun and moonare on the same line with the earth on the plane of its orbit of the Earth, again, is itself not quite a perfectcircle but a nearly circular ellipse, the sun being situated inone of its two foci. Erom this it follows that the Earth is notat all times equidistant from the sun ; but, since the equatorand the ecliptic are inclined at an angle to one another,and must therefore intersect each other somewhere, bothmust necessarily have two points in common. Thesepoints are situated at the extremities of the shorter axis. * 111 s=
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Keywords: ., bookauthorkeaneaha, bookcentury1800, bookdecade1870, bookyear1878
