A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 195
a, of ma-terial still less dense.and sofar observable only duringtotal eclipses of the sun.Fig. 94 shows the relative positions of these different elements ofthe solar constitution. 5. A fifth subject deals with the measurement of the suns lightand the relative brightness of different parts of the… … Fig. 94. Constitution of the Sun. From The Sun, by permissionof the Publishers. 292. The Photosphere.—The suns visible surface is called thephotosphere, and when studied under favorable atmospheric condi- THE PHOTOSPHERE. 183 tions, with rather a low magnifying power, it looks like rough…
Astronomy
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