ly more than twice as ceeding into space at the same angle. The two different luminous, for the simple reason that seeing with one eye is his telescope. It therefore occurred to the writer that, as sections of the heavens thus brought under observa mutilation, and aman can no more see half as well… … quarter of its original brilliancy; whereas the double-eyed comet seeker as it was con- brilliancy of image, in the case of the bino- structed. Both eye pieces may be used toge- cnlar, is increased to twice the original quan- ther by a single observer, or by their proper BINOCULAR TELESCOPE, WITH…
Patents · Patented · Boiler · Oysters · Piston · Binocular · Scientific American · Feet · Sewing machine · Needle points · Comet seeker · Norwalk iron · Binocular vision · Iron works · Focal length · Steam engine · Magnifying power
Internet Archive · Public domain (published before 1931). Free to use for anything.
