Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 100
na, to which mustbe added that of complementary colours. PERSISTENCE OF IMPRESSIONS ON THE RETINA, 83 Look Steadily wjth both eyes at the white figure in theillustration, on a black ground, particularly keeping yoUrgaze ^xed on the band in the centre ; then, just whenyour eyes are beginning to feel… … Fig. 70.—Figure for Experiment of Persistence of Impressions on the Retina. light. I If the imp be red m the silhmette the impressionwill come out in green, which is the complementarycolour of red. It is rather comical when a nuniber ofpeople try the experiment simultaneously, all with headsin the…
Scientific recreations
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Il fuoco trionfante : racconto della traslatione della miracolo[s]a imagine detta la Mado[n]na del fuoco, protettrice della città di Forli : solenizzata da esse città sotto li XX. di ottobre M:D.C.XXXVI. (1637)](https://img.insideoutlibrary.com/img/200/ia-ilfuocotrionfant00bezz-41-30.webp)
