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Nascent Drama

To art students, the use of white can present particular problems, and there is at least one training course specializing in the use of white in art.[citation needed]
 
Until Newton's work became accepted, most scientists believed that white was the fundamental color of light; and that other colors were formed only by adding something to light.
 
Since the single-colored beam remained a single color, Newton concluded that the prism merely separated the colors already present in the light.
 
One set of colors that deserves this description is the color emitted via the process called incandescence, by a black body at various relatively-high temperatures.
 
The white light used in theatre illumination has a color temperature of about 3200 K. Daylight can vary from a cool red up to a bluish 25,000 K.
 
Not all black body radiation can be considered white light: the background radiation of the universe, to name an extreme example, is only a few kelvins and is quite invisible.
 
While the color of a light source can be reasonably measured by its correlated color temperature, a different approach is required for objects since different samples may appear white without a reference.
 
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