Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 197
Fig. 192. coming from the centre of the suns disk penetrates thisatmosphere under the most favorable conditions, and is butslightly reduced in amount. The edges of the disk, on theother hand, are seen through a much greater thickness ofatmosphere : and the light is reduced by absorption…
Astronomy
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