Astronomy for schools; upon the basis of Mons. Arago's lectures at the Royal observatory of Paris .. (1841)
Arago, F. (François), 1786-1853, Haskins, Roswell William, [from old catalog] ed · New York, Robinson, Pratt & co.; · leaf 178
which is necessary torender the immersions visible; in other words, fromthe time which is necessary for light to pass from Jto T; and as the operations have been made in in-verted order, the difference of 16m 26s denotes thetime in which light passes from J to T; or, to expressit differently, 16m… … of the rotation of the earth. If the earth is immoveable, we should not see theheavenly bodies at the moment they arrive upon thehorizon or the meridian, but only after the lapse of somuch time as is necessary for the rays of light, fromthem, to reach our eye. If, on the contrary, the earth turns…
Astronomy
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