 | Hiram Mattison - Astronomy - 1849 - 290 pages
...and south, and his apparent passage through the plane of the equinoctial, twice a year, are caused by the inclination of the axis of the earth to the plane of the ecliptic, and her revolution around the sun. What we have here said will serve more fully to illustrate Lesson 25,... | |
 | Thomas Dick - Educational sociology - 1850 - 586 pages
...heat of our summer is generally greatest. The true cause of the variation of the seasons consists in the inclination of the axis of the earth to the plane of its orbit ; or, in other words, to the ecliptic. If its axis were perpendicular to the ecliptic, the... | |
 | Francis Lieber - Encyclopedias and dictionaries - 1851 - 618 pages
...given time than at others, so that the solar days cannot be equal. Another circumstance, dependent upon the inclination of the axis of the earth to the plane of the ecliptic, is also to be taken into the account. The apparent solar time, therefore, is distinguished from mean... | |
 | Alexander Chodźko - 1851 - 540 pages
...obliquity ol a line. — ekliptyki, the obliquity of the ecliptic. — osi ziemsktej do ekliptyki, the inclination of the axis of the earth to the plane of the ecliptic.-— crooked back, stooping posture. POCHYtY,A,E,sloping, slanting; inclined; crooked, bent down, stooping.... | |
 | Gilman Joslin - 1852 - 54 pages
...curious phenomenon is furnished by PROBLEM III. To show that the changes of the seasons are produced by the inclination of the axis of the earth to the plane of its orbit. Bring the calendar index to the 21st of March ; then turn the base until the axis of the... | |
 | Thomas Dick - 1857 - 878 pages
...heat of our summer is generally greatest. The true cause of the variation of the seasons consists in the inclination of the axis of the earth to the plane of its orbit ; or, in other words, to the ecliptic. If its axis were perpendicular to the ecliptic, the... | |
 | Christopher Irving - 1858 - 140 pages
...surface in which the ecliptic is situate. Q. What causes the difference in the seasons of the year *? A. The inclination of the axis of the earth to the plane of the ecliptic. If the earth's axis were perpendicular to the ecliptic the seasons would always be the same, and the... | |
 | Edward Hughes - 1858 - 474 pages
...the sun is subject to an annual fluctuation between 234° north and 23i° south, as a consequence of the inclination of the axis of the earth to the plane of the orbit in which it moves. He will have learnt little indeed if he does not know that this is one of... | |
 | Marcius Willson - Object-teaching - 1863 - 356 pages
...23° 28'." In Webster's large dictionary it is erroneously stated, under the word "inclination," that "the inclination of the axis of the earth to the plane of the ecliptic is 23° 28'." On the contrary, its axis inclines 23° 28' from a line perpendicular to the plane of... | |
 | Henry Kiddle - Astronomy - 1868 - 300 pages
...and the difference in the amount of heat received from the sun. 121. The CAUSES OF THE SEASONS are the inclination of the axis of the earth to the plane of its orbit, and its revolution around the sun ; and the vicissitudes are regular, that is, always hhe... | |
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The true cause of the variation of the seasons consists in the inclination of the axis of the earth to the plane of its orbit; or, in other words, to the ecliptic. 
