The book of stars; being a simple explanation of the stars and their uses to boy life, written to conform to the tests of the Boy scouts (1915)
Collins, A. Frederick (Archie Frederick), 1869- · New York, D. Appleton and company · leaf 146
Fig. 138.—Waves in the Ether. the waves in the ether would still be sent out we would haveno means of receiving them. The eye is simply a camera on a very small scale, but whatit lacks in size it makes up by the excellence of its operation.If you will set up a sheet of white cardboard on one end of…
Astronomy · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
