Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 24
will be muchmore exact, and will furnish a means of testing theaccuracy of previous calculations. I874-J THE TRANSIT OF VENUS. I will now tell you something of how the observa-tions are taken, and of the preparations whichhave been made for this purpose. The direct object is to obtain what is… … at A, and another at B, are looking at the sun, S.The heavenly bodies, though at different distancesfrom the earth, appear to us as if they were all situ-ated in the same vaulted surface, represented bythe curved line m G O. The person at A sees thesun as if it were at G, while the person at B sees…
Children's literature
Internet Archive · UNC Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from St. Nicholas [serial], 1873, leaf 24](https://img.insideoutlibrary.com/img/1024/ia-stnicholasserial02dodg-24-4.webp)
![An illustration from The star; being a complete system of theoretical and practical astrology ... / The whole illustrated by the nativity of the author ... By Ebn Shemaya [i.e. D. Parkes]. (1839)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b22022910-38-1.webp)
