Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 21
18 GILBERT BOY ENGINEERING … Fig. 23. You see an inverted image of thecandle light from the flametravels in a straight lineto your eye. Close one eye and lookat any part of some otherobject, then again movethe book across thestraight line from thepart to your eye. Doyou find again that youcannot see the part whenthe book has…
Light · Scientific recreations
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