Elementary optics and applications to fire control instruments (1922)
United States. Army. Ordnance Dept · Washington, Govt. Print. Off. · leaf 38
same 3rgent and divergent leu.ses source. Thus far only theimages of points ly-ing on the opticalaxis of the lens havebeen considered. In figure 37 let the arrow OOi represent anextended object. The image of O is at O. To locate the imageof 0„ consider the path of the ray OjC. If the thickness of…
Optics · Optical instruments · Fire control (Gunnery) -- Optical equipment
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