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 167
ographs proved tcbe of little value,and the results oithe measurements and calculations upon the American pictureshave not yet been published. There is a growing apprehensionthat no photographic method can be relied upon. The most recent determinations by various methods indi-cate that the suns… … ASTRONOMY. I49 II. PHYSICAL AND CHEMICAL CONDITION OF THE SUN. Physical Condition of the Sun. 143. The Sun Composed mainly of Gases. — It is nowgenerally believed that the sun is mainly a ball of gas, orvapor, powerfully condensed at the centre by the weightof the superincumbent mass, but kept from…
Astronomy
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