Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 160
Fig. 151.—The Telescope (Galileo). How a Telescope Works.—A real telescope has at leasttwo lenses in it; the larger lens is placed in the end of the tubenearest the object to be viewed and is called the object glassbecause the light from the object is received by it. The smaller lens is placed in…
Astronomy · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
