Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 81
78 GILBERT BOY ENGINEERING … Fig. 121. The light is bentFrom Black and Davis Practical Phys-ics, published by The Macmillan Co. inches (Fig. 122). Does thepart under water appear to beonly 3 inches long when viewedvertically? It does, becauselight travels in water onlythree-fourths as fast as it doesin air. Does it appear much…
Light · Scientific recreations
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