Olmsted, Denison, 1791-1859. [from old catalog] · New York, R. B. Collins · leaf 161
two diameters are equal, the moons shadow juslreaches the earth, and the sun is hidden but for a mo-ment from the view of spectators situated in the linewhich the vertex of the shadow describes on the surfaceof the earth. But if, as happens when the moon comesto her conjunction in that part of her… … 180. What cannot the diameter of the moons shadowwhere it eclipses the earth, exceed ? What is the greatestportion of the earths surface ever covered by the moons pe-numbra ? 181. How does the moons apparent diameter compare withthe suns 1 When will the eclipse be total, and when annular ?…
Astronomy
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