Harris, John · Montreal, Lovell Printing and Publishing Co. · leaf 79
from the earth ; and let e. represent a fifth star interme-diate in situation between the others as shown in thefigure. Viewed from the earth, the five stars may presentthe appearance of an equidistant series.. one under theother, with equal inten^als. 10 PARALLAX. Now if the reader apprehends the… … A.B. be a space on a road, say 100 feet in length, andlet d. be a tree at a hundred yards distance, close against ahigh wall W. W. If an observer walk from A. to B., look-ing at the tree against the wall; the tree will not furnishany parallax.., and if there be any mark behind or abovethe tree by…
Astronomy
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