An introduction to astronomy : designed as a text book for the students of Yale College (1846)
Olmsted, Denison, 1791-1859, Yale College (1718-1887) · New York : Collins, Brother & Co. · leaf 183
al.If the two diameters are equal, the moons shadow just reaches theearth, and the sun is hidden but for a moment from the view ofspectators situated in the line which the vertex of the shadow de-scribes on the surface of the earth. But if, as happens when themoon comes to her conjunction in that… … 269. Eclipses of the sun are modified by the elevation of themoon above the horizon, since its apparent diameter is augmented ECLIPSES. 159 as its altitude is increased, (Art. 217.) This effect, combined withthat of parallax, may so increase or diminish the apparent distancebetween the centers of…
Astronomy
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