Guy's elements of astronomy, and an abridgement of Keith's New treatise on the use of the globes (1832)
Guy, Joseph. [from old catalog], Keith, Thomas, 1759-1824. A new treatise on the use of the globes. [from old catalog] · Philadelphia, Key, Mielke & Biddle · leaf 113
>. 2 // /% … FAR IFF AX ECLIPSES. i O When at F, a small part only will be seen from theearth, and that will appear horned ; at G, one-half ofthe enlightened hemisphere is visible ; it is then saidto be in quadrature. At H, three-fourths of the enlightened part are visi-ble, and it is then said to be gibbous;…
Astronomy · Celestial globes
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
