Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 31
Fig. 43. A boxing match 28 GILBERT BOY ENGINEERING … Fig. 44. Living shadows Put one boy near thescreen and anothernearer the light. Thefirst is natural size,the second is enor-mous (Fig. 43). If theynow pretend to fightit is very, very funnyfrom the audience. Inone of the fights, havethe lamp on the stool,let the little fellowbeat the big fellow,and…
Light · Scientific recreations
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