Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 217
the screen. If the dis-tance 0£= 30 feet, 0F = 8 feet, andthe length of the tree ^5=35 feet, findth3 length of the image CD. Underwhat condition will the length of the Image equal the length of the tree ?This exercise ilhistrates the principle of the photographers camera. Ex. 770. By means of Prop.…
Geometry, Plane · Geometry, Solid
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