Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 124
Screen, and if now you Fig. 184. You illustrate the camera GILBERT LIGHT EXPERIMENTS 121 … Fig. 185. The camera obscura hold postcards, drawings,and other small objectsupside down against thebook, the lens will throwerect and enlarged imageson the screen, and yourshow is on. The PhotographicCamera is simply a light-proof box with a converg-ing lens in one side anda plate holder in…
Light · Scientific recreations
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