The orbs around us : a series of familiar essays on the moon and planets, meteors and comets, the sun and coloured pairs of suns (1902)
Proctor, Richard A. (Richard Anthony), 1837-1888 · London : Longmans, Green · leaf 320
l we require in this in-stance) in which the actual upward motion of promi-nence matter was measured and timed. On September 7, 1871, Professor Young, the emi-nent American spectroscopist, was observing a large CORONA DUE TO ERUPTION. 305 hydrogen cloud by the suns edge (fig. 1). This cloud… … TIIK SAME HALF AN HOUR LATER. these seeming pillars being in reality hydrogen jets,brighter and more active than the substance of thecloud. At half-past twelve, when Professor Youngchanced to be called away from his observatory, therewere no indications of any approaching change, except 306 THE…
Astronomy · Solar system
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