 | James Hodgson - Astronomy - 1723 - 724 pages
...min. 57 fee- and the Right Afcenfion 55 deg. 17 rain. 03 fec,¿¿ The Obliquity of the Ecliptic, or the Inclination of the Axis of the Earth to the Plane of the Ecliptic, is the Principal Poftulatum upon which all the Calculations and Conclusions relating to the Sun, Moon,... | |
 | John Keill - Astronomy - 1739 - 504 pages
...thofe Circles. Let it meet with the Ecliptick in A ; the Arch PA will meafure the Angle PCH, which is the Inclination of the Axis of the Earth to the Plane of the Ecliptick; that is, it will be 66 J. Degrees ; and therefore the'-Arch EP, which is its Complement... | |
 | Benjamin Martin - Science - 1747 - 574 pages
...Points E and P Fig. i. draw the great Circle EPA, meeting the Ecliptic AL in A ; the Arch PA mcafures the Inclination of 'the Axis of the Earth to the Plane of the Ecliptic, tax. the Angle PCH, which is found by Obfervation to be about 66° 30', and therefore ib Complemental... | |
 | William Nicholson - Electricity - 1797 - 690 pages
...autumn, and all the variety of the fenfons, are produced by the fimple and admirable contrivance of the inclination of the axis of the earth to the plane of the ecliptic ; yet this mechanical difpofition would not have been alone fuffkient to produce that gradual change... | |
 | Benjamin Graf von Rumford - Charities - 1798 - 550 pages
...produced in a manner at the fame time the moft fimple and the rhoft ftupendous (by the inclma» tion of the axis of the earth to the plane of the ecliptic) ; yet this mechanical contrivance alone would not have been fufficient (as I fhall endeavour to fhow)... | |
 | Philip Doddridge - 1803 - 624 pages
...subject to diseases and death; besides those arising from the asperities of the surface of our globe, and the inclination of the axis of the earth to the plane of the ecliptic; they are most of them so evidently weak, and capable of being retorted as beauties rather than defects... | |
 | Thomas Keith - Astronomy - 1811 - 388 pages
...and nights at the equator are always equal. Thus, the different seasons are clearly accounted for, by the inclination of the axis of the earth to the plane of its orbit,* combined with the parallel motion of that axis. CHAPTER V. Of the Origin of Springs and... | |
 | 1814 - 378 pages
...conclude, that the vicissitudes of the seasons, and the inequalities of day and night, are caused by the inclination of the axis of the earth to the plane of hs orbit. We, who have the happiness of being plated in a pleasant region of the temperate zone, can... | |
 | Thomas Keith - Astronomy - 1819 - 380 pages
...and nights at the equator are always equal. Thus the different seasons are clearly accounted for, by the inclination of the axis of the earth to the plane of its orbit,* •combined with the parallel motion of that axis. CHAP. V. Of the Origin of Springs and... | |
 | Malthe Conrad Bruun - 1822 - 696 pages
...such, the sphere would appear parallel. As the limits of the zones and of the climates depend upon the inclination of the axis of the earth to the plane of the ecliptic, it is of importance to determine this inclination. We may easily discover it by observing at one and... | |
| |
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. 
