Past and future : being a second edition, with addenda, of Saturn's kingdom, or, Fable and fact / by Charles Moore Jessop.
- Jessop, Charles Moore
- Date:
- 1892
Licence: Public Domain Mark
Credit: Past and future : being a second edition, with addenda, of Saturn's kingdom, or, Fable and fact / by Charles Moore Jessop. Source: Wellcome Collection.
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![Diagram of the Earth’s Revolution. By Charles Moore Jessop. IGCORGC PHILIP *SOn 3 J IUIT STB rcr This Diagram shows that the Sun is not in the centre of the Earth’s orbit, but is nearer to the Earth in Winter than in Summer; that the Eartl^ revolves in an elliptical orbit round the Sun, pro- ducing by this motion change of Seasons ; and by rotation on her axis the phenomena of day and night. Attached to the Earth is a rod, sliding through the Sun, whose point traces the plane of the Ecliptic, and indicates the constellation in which the Sun is, said to be, in any part of the Earth’s revolution.—[That is, the constella- tion becomes visible by the revolution of the Earth, and not by that of the Sun]. The starting point of Celestial Longitude or Vernal Equinox, the Precession of the Equinoxes, and the Solar, Sidereal, and Anomalistic years arc all easily explained. Eclipses can be readily illustrated if a button, to represent the Moon, is placed on the rod between the Sun and Earth, or behind the Earth ; whilst the shaded portions within the ellipse show how the Earth traverses equal areas in equal times. Further, that in consequence of the Earth’s inclination to the plane of the Ecliptic, the Sun’s Compass- bearings in winter and summer must vary. A DESCRIPTION IS ATTACHED TO EACH DIAGRAM. George Philip & Son, 32, Fleet Street, London, E.C.](https://iiif.wellcomecollection.org/image/b28136779_0337.jp2/full/800%2C/0/default.jpg)
