Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 128
ge. Drawa cage and a bird with centers about 2 inches apart on paper,stand a card on the line AB between them (Fig. 192), then look at GILBERT LIGHT EXPERIMENTS 125 the cage with one eye and at the bird with the other. Does thebird enter the cage ? The Moving-Picture Machine (Fig. 193) throws 12 to… … Fig. 193, A moving-picture machine The Why of the Movies. The reason you see the picturescontinuously and are not aware that the light has been shutoff is that your eyes retain each picture for a short time afterit has left the screen. You will now illustrate this. Experiment No. 131. Circles of…
Light · Scientific recreations
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