Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 111
108 GILBERT BOY ENGINEERING … same size? Place can-dle at 6 inches. Is theimage larger? Placecandle at 5 inches. Isthe image larger still?Place candle at the fo-cus. Is the image very-large? Place candle at3 inches and 2 inches,that is, closer than focus. Pig. 166. You see a picture of your hand A™ no images formed ? Repeat…
Light · Scientific recreations
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