Counterfeit Deterrent Features for the Next-Generation Currency Design (1993) / Chapter Skim
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Appendix C: Background on Color
Appendix C: Background on Color
Pages 113-114
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From page 113... ...
The Commission Internationale de l'Eclairage has also specified a number of standard illuminates, in particular "A," corresponding to a tungsten filament bulb with a color temperature of 2854K, "C" for noon sunlight, and "D6s" for daylight with a color temperature of 6500K. A last type of illumination, not standardized but important for currency, is the reddish candle or low-level incandescent tungsten filament light so often found in dimly lit surroundings.
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From page 114... ...
8. Interference as in optically variable pigments holograms, where the waves of light scattered by structured thin films or different parts of an object interfere with each other and either cancel or reinforce to produce patterns of colors from white light.
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