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 124
Figure 8. Venturi Tube. (Produces the suction to hold the film flat in the American type K-1 Camera.) AERIAL PHOTOGRAPHY 103 THE PROBLEM OF THE VERTICAL In attempting to make maps by aerial photography, it is neces-sary, if any great accuracy is desired, to take the photographs withthe focal plane…
Physics · Military art and science
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