Olmsted, Denison, 1791-1859. [from old catalog] · New York, R. B. Collins · leaf 113
What is the eccentricity of the ellipse ? How many el-lipses may there be having a common focus 1 Explain figure26 How eccentric is the earths orbit ? 100 UNIVERSAL GRAVITATION. center is called the eccentricity of the ellipse ; and theellipse is said to be more or less eccentric, as the distanceof… … ellipses around the common focus F, the innermost AGDhaving a small eccentricity or varying little from a cir-cle, while the outermost ACB is a very eccentric ellipse.The orbits of all the bodies that revolve about the sun,both planets and comets, have, in like manner, a com-mon focus in which the…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![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-199-120.webp)
