the true really to move round on the ellipse, describing equal areas variation inin equal times round the point o. an elliPse- Conceive, also, an imaginary sun to pass round the circle,describing equal angles, in equal times, round the center m.Now suppose the two suns to be together at the point… … Fig-19- at the point A, and again at the point B,and so continue ineach subsequent re-volution. The imaginary sunB on the circle every-where describes equalangles in equal times;and the true sun, onthe ellipse, describesonly equal areas inequal times; but the angles will be unequal. Conceive thetwo…
Astronomy
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-383-265.webp)
