Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 250
been deceivedby an optical illusion. It is No. i that is the tallest, andit exceeds No. 3 by about o-o8 inch. The explanation of the phenomenon is very simple.Placed in the middle of the well calculated vanishing lines,the three silhouettes are not in perspective. Our eye isaccustomed to see… … An Optical Illusion. The origin of the engraving is no less curious thanthe engraving itself. It serves as an advertisement for anEnglish soap manufacturer, who prints his name in van- 228 EXPERIMENTAL SCIENCE. the decreasing lines^large number of ishing perspective between each ofand places the…
Physics · Lantern projection · Electric apparatus and appliances
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