Familiar lessons on astronomy ; designed for the use of children and youth .. (1848)
Fowler, Lydia F. (Lydia Folger), 1823-1879 · New York, Fowlers & Wells · leaf 56
enter it ob-liquely, are bent out of their course. Therefore, we 2. Why does the water appear more shallow than it really is ? Whatfollows? 3. What experiment is mentioned? What is the reason?4. By what is the earth surrounded 1 Does its density vary ? Whatfact is related of the atmosphere on the… … In the cut, CD, EF, GH, and IK, will represent dif-ferent degrees of density of the atmosphere. SupposeA to be a star, from which a ray of light proceeds inthe direction of Aa. It will not be seen at b, but isrefracted and seen in the line of ad, and so on to cL.The star would appear to change its…
Astronomy
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