Elementary optics and applications to fire control instruments (1922)
United States. Army. Ordnance Dept · Washington, Govt. Print. Off. · leaf 53
eye appears abovewhen viewed through the telescope. Therefoi;-e, the image is aninverted one. Points to the right and left are similarly interchanged,and it is evident that this is true inversion and not reversion. Thisinversion may be considered as indicated by the negative value ofa yielded by… … (43) Fig. 53.—Galilean telescopic system. the two diameters arc denoted, respectively, by rf, and tZ,. it is easilyseen that Equations 38, 39, and 40 give the focal length and location ofprincipal points for a system composed of two lenses. But s =/i +/,.Therefore, in all these expressions the…
Optics · Optical instruments · Fire control (Gunnery) -- Optical equipment
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
