The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 197
culae oftenundergo very rapid change of form, while elsewhere on thedisk they change rather slowly, sometimes undergoing littleapparent alteration for several days. 176. PVAy the FaciUce are most Conspicuous near theLimb of the Sun.—The reason why the faculae are mostconspicuous near the limb of… … Fig. 192 coming from the centre of the suns disk penetrates thisatmosphere under the most favorable conditions, and is butshghdy 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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