Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 125
122 GILBERT BOY ENGINEERING … scura. Arrange the 8-inch lens, mir-ror, and box as in Fig. 186. Cover thefront of the box and your head witha black cloth. Do you get a beau-tiful picture on the white paper atthe bottom of the box? Experiment No. 127. A moving-picture show. Use the camera ob-scura on a table outdoors or near…
Light · Scientific recreations
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
