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 193
Fig. 1 from us, and on the other side towards us. The distortions of the solar lines indicate that the windat the surface of the sun often blows with a velocity offrom one hundred to three hundred miles a second. The … most violent wind known on the earth has a velocity ofa hundred miles an hour. ASTRONOMY. 175 III. THE PHOTOSPHERE AND SUN SPOTS. The Photosphere. 172. The Granulation of the Photosphere. — When thesurface of the sun is examined with a good telescope underfavorable atmospheric conditions, it is…
Astronomy
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