r- Figure 10 if it came from i*7, the violet as if itand the intermediate colors as if they origi-nated at points intermediate between r and v. Instead ofdoing this, he allowed the light to proceed to the white screen,forming a red spot at r, a violet spot at v, etc. Since; thepencil of light…
Light
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.