Star-land; being talks with young people about the wonders of the heavens (1899)
Ball, Robert Stawell, Sir, 1840- [from old catalog] · Boston and London, Ginn & company · leaf 142
Fig. 45.—The Lessened Gravitation on the Moon. effort than the support of a single sack on the earthcost him. To explain how such a change as this hasoccurred, look at these two pictures : one shows thelaborer on a small body like the moon, the other showshim on a great globe like the earth. What…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
