The young gentleman's astronomy, chronology, and dialling ... / [Edward Wells].

  • Wells, Edward, 1667-1727.
Date:
[1712]
Catalogue details

Licence: Public Domain Mark

Credit: The young gentleman's astronomy, chronology, and dialling ... / [Edward Wells]. Source: Wellcome Collection.

    27/388 (page 7)
    CHAP. I. •-**'..* i Of the Copernican Syftetn in ge¬ neral. _ . THE Copernican Syftem is repre- fented. Fig. i. where the Sun is placed in the Center, and fuppofed never to move out of it, but only to move therein round its own (*) Axis, from Weft to Eaft, in the Space of a- bout 25 Days. This Motion of the Sun round its Axis is inferred from the Obfervations made of the Spots of the Sun. Round the Sun, as the Center of their Orbits, move fix Spherical Bo¬ dies in this Order and Time, viz. Mercury next to the Sun, in about three Months y Venus next to Mercury, in about feven Months and an Half $ after that the Earth in a Year 5 then Mars in about two Years 5 then Jupi¬ ter in twelve Years 5 and outermoft (*) See Chap. 3. SVtf. 5. and the Note there, P> 4] I. The Place of the Sun. 2. The Places of Mercu¬ ry, Venus, the Earth, Mars, Ju¬ piter, and Saturn ; and their Periodical Times, of