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 285
Professor Hall, who had been observing the satellitesof Saturn with the great Washington telescope (18), saw abrilliant white spot near the equator of the planet. Itseemed as if an immense eruption of incandescent matterhad suddenly burst up from the interior. The spot gradu-ally spread itself out… … Fig. 287. From all the observations on this spot, Professor Hallfound the period of Saturn to be ten hours fourteen minutes,reckoning by the brightest part of the streak. Had themiddle of the streak been taken, the time would have beenless, because the bright matter seemed to be carried alongin the…
Astronomy
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