Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 268
s made in each of three FlG. l8o._Light travels in a straight line,cards, and the cards are placed in a row in front of a candle. The light of the candlecan be seen only when the holes are in a straight line. When light moving through one medium meets another medium,it is reflected or refracted or…
Physics · Home Economics
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