OM. 58 known and the device of the rotating disks used as a curious experiment, but its practical utility has in recent years been greatly enhanced by a very simple ini[)rovement made by J. Clerk Maxwell. lie merely cut a slit from the circumference to the center of the disk, and thus was able to… … fe disks there must be a speed of -^'"' at least fifty revolutions to the Fig. 1. second. With slower speed there will be a dazzling effect, very unpleasant to the eyes, and no well-defined color. A little mathematics will determine the speed possible with any apparatus, and unless at least the…
Color -- Psychological aspects · Color -- Study and teaching
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