An Introduction to Astronomy : Designed As a Text book for the Students of Yale College
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In our eReader you can find the full English version of the book. Read An Introduction to Astronomy : Designed As a Text book for the Students of Yale College Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book An Introduction to Astronomy : Designed As a Text book for the Students of Yale College
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87.) The moon's apparent diameter is 31' 7", and her real diameter 2160 miles. For, Rad. : 238,545 :: sin. 15' 33^" : 1079.6. = moon's semi-diame- ter. (See Fig. 26, p. 71.) And, since spheres are as the cubes of the diameters, the vol- ume of the moon is ^V that of the earth. Her density is nearly I (.615) the density of the earth, and her mass {=z^^x.Qlb) is about sV- 202. The moon shines by reflected light borrowed from the sun, and when full, exhibits a disk of silvery brightness, diversi- ...fied by extensive portions partially shaded. By the aid of the telescope, we see undoubted signs of a varied surface, composed of extensive tracts of level country, and numerous mountains and valleys.
203. The line which separates the enlightened from the dark portions of the moon's disk, is called the Terminator. (See Fig. 2.
Frontispiece.) As the terminator traverses the disk from new to full moon, it appears through the telescope exceedingly broken in * Selenography is a word more appropriate to a description of the moon, but is not perhaps sufficiently familiarized by use.
What to read after An Introduction to Astronomy : Designed As a Text book for the Students of Yale College?
You can find similar books in the "Read Also" column, or choose other free books by Denison Olmsted to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
87.) The moon's apparent diameter is 31' 7", and her real diameter 2160 miles. For, Rad. : 238,545 :: sin. 15' 33^" : 1079.6. = moon's semi-diame- ter. (See Fig. 26, p. 71.) And, since spheres are as the cubes of the diameters, the vol- ume of the moon is ^V that of the earth. Her density is nearly I (.615) the density of the earth, and her mass {=z^^x.Qlb) is about sV- 202. The moon shines by reflected light borrowed from the sun, and when full, exhibits a disk of silvery brightness, diversi- ...fied by extensive portions partially shaded. By the aid of the telescope, we see undoubted signs of a varied surface, composed of extensive tracts of level country, and numerous mountains and valleys.
203. The line which separates the enlightened from the dark portions of the moon's disk, is called the Terminator. (See Fig. 2.
Frontispiece.) As the terminator traverses the disk from new to full moon, it appears through the telescope exceedingly broken in * Selenography is a word more appropriate to a description of the moon, but is not perhaps sufficiently familiarized by use.
What to read after An Introduction to Astronomy : Designed As a Text book for the Students of Yale College?
You can find similar books in the "Read Also" column, or choose other free books by Denison Olmsted to read onlineMoreLess
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