Problems in physics. Derived from military situations and experience (1919)
United States. War Dept. Committee on education and special training, Dodge, Homer Levi, 1887- · [Washington? · leaf 116
Figure 5. Hand-held Camera Model A-1.(8 to 10 inch lens. Takes all standard 4x5 Graflex equipment). … Figure 6. American Type L Camera. (Copied from Camera most used by British at the front. 8x12 inch lens. 4x5 plates, charges automatically by wind propeller.) AERIAL PHOTOGRAPHY 99 (d) If the length of trace on the plate remains the same,does the contrast with the background vary with thealtitude?…
Physics · Military art and science
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