List, C, Hall, T. G. (Thomas Grainger), 1803-1881 · Philadelphia : Thomas Cowperthwait & Co. and Carey & Hart · leaf 81
its; and when the eclipse is partial, we say,five or six digits are eclipsed, as the case may be. Although complete obscuration commences onlywhen the moon enters the shadow e t e, yet a dim-ness takes place a little before; for if we join a eand d e, and produce the lines to meet the orbitm m,… … In this figure a total eclipse of the sun is repre-sented. ECLIPSES. 77 3i is the moon in her orbit, and exactly betweenthe sun and earth, or in conjunction with the sun,and e is the earth. m a I m is the moons shadow obscuring a smallportion of the earths surface. To the inhabitantsbetween a and…
Astronomy
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