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 188
es will bereadily seen from the followingillustration: Suppose a numberof persons stationed at equalintervals in a line on a longplatform capable of moving back-ward and forward. Suppose themen are four feet apart, and allwalking forward at the samerate, and that the platform isstationary, and… … I7O ASTRONOMY. moving forward at the rate of one foot in the interval betweentwo mens leaving the platform, and that the men continue towalk as before: it is evident that the men will then be threefeet apart in the line after they have left the platform. Theforward motion of the platform has the…
Astronomy
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