Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 137
though of irregular form; but here and there,especially in the neighborhood of the spots, they are drawnout into long streaks, known as filaments, willow leaves,or thatch straws. Certain bright streaks called faculce are also usually visi-ble here and there upon the suns surface, and though not… … Fig. 46.—The Great Sun Spot of September, 1870, and the Structure of the Photosphere.From a Drawing by Professor Langley. From the New Astronomy, by permission ofthe Publishers. the photosphere, but elevated above the general level, and in-tensified in brightness. 124 SUN SPOTS. [§184 Fig. 47 shows…
Astronomy · Constellations
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
