artificial colors to enhance the color differences.
The colored shadow demonstration
shows how a few colors can combine to
make many colors or white, which is all
colors combined. Note: It is difficult to get a completely white screen with indoor/outdoor floodlights. The colors produced by them are not entirely monochromatic. Using much more expen-sive lamps produces a better white but the whiteness is not significantly enhanced. An alternative to the colored lamps is to obtain red, green, and blue theatrical gels (filters) and place them (one each) on the stage of three overhead projectors. Aiming each of the three projectors to the same place on |
the screen produces the same effect as the
lamps, but the colors are more intense. For Further Research:
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