Olmsted, Denison, 1791-1859. [from old catalog] · New York, R. B. Collins · leaf 118
he tangent, describingthe line AD ; with a greater velocity it will describe acurve nearer to the tangent, as AE; and with a stillgreater velocity it will describe the curve AF. 134. In figure 30, suppose the planet to have passedthe point C with so small a velocity,- that the attractionof the sun… … the planet, when at D, is acting in the direction DS,and, on account of the small inclination of DE to DS,the force acting in the line DS helps the planet forwardin the path DE, and thus increases its velocity. In likemanner, the velocity of the planet will be continuallyincreasing as it passes…
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-192-110.webp)
