Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 25
light which goes through from oneside is exactly equal to that whichgoes through from the other, thatis, the one candle throws as muchlight on the screen as do the fourcandles. This is explained by the Fig. 29. The spot is bright by trans-mitted light law of intensity men-tioned above. Each ofthe… … Fig. 30. One candle at one foot is equal to four attwo feet GILBERT LIGHT EXPERIMENTS 23
Light · Scientific recreations
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