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...or at 60° ? •2. THE EFFECTS OF THE INCLINATION OF THE EARTH'S AXIS PART I. — To find the effect of the inclination of the earth's axis to the plane of the orbit, an apparatus Fio. 2. shown in Figure 2 i will be useful. The horizontal wire represents the...

...that auroral displays are more frequent before midnight than afterwards. If we consider the effect of the inclination of the earth's axis to the plane of the ecliptic, we shall see that the effect of the recession of either pole from the sun will be to increase the number...

...would account for it ; but the periodical disturbances in the Earth's motion, and the secular variation of the inclination of the Earth's axis to the plane of the ecliptic produced by Venus, do not allow any such change in our estimate of her mass. On the other hand, a planet...

...would account for it; but the periodical disturbances in the Earth's motion, and the secular variation of the inclination of the Earth's axis to the plane of the ecliptic produced by Venus, do not allow any such change in our estimate of her mass. On the other hand, a planet...

...distance, giving rise to phenomena upon the earth whos< full significance is not yet understood. By the inclination of the earth's axis to the plane of the ecliptic, th plane in which the earth moves in its revolution around the sun, th FIG. g. — Diagram to show...

...subject have never been sufficiently considered. As due to the so-called " preceision of the equinoxes," the inclination of the earth's axis to the plane of the ecliptic is completely reversed during every period of 12,500 years, or half the period of an entire circle...

...greatest northern latitude at which it is visible from the Earth's surface. 5. Draw a diagram showing how the inclination of the Earth's axis to the plane of the ecliptic causes variations in the length of day and night. Why is summer hotter than winter ? 6. Define the...

...proportional to the square of the distance from the sun. Seasonal Variation with Latitude. — Because of the inclination of the earth's axis to the plane of the ecliptic and, further, because this axis always remains parallel to itself as the earth revolves around the...

...constant nor uniform in the different latitudes and seasons. Owing to these physical C9nditions and the inclination of the earth's axis to the plane of the ecliptic, producing unequal day and night in the four seasons, there are ceaseless movements in the atmosphere...