Berry, Arthur,b. 1862 · London, J. Murray · leaf 101
ely the screening off of the suns light froma particular observer, and the sun may therefore be eclipsedto one observer while to another elsewhere it is visible asusual. Hence in computing an eclipse of the sun it isnecessary to take into account the position of the observeron the earth. The… … Fig. X\.—Parallax. an ideal observer at the centre of the earth. If, infig. 31, M denote the moon, c the centre of the earth,a a point on the earth between c and m (at which thereforethe moon is overhead), and b any other point on the earth,then observers at c (or a) and b see the moon in…
Astronomy
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