Printing Digital Images Page 6 of 22 Television is the most familiar application of additive color mixing. A close look at the screen image shows clusters of red, green and blue dots or stripes, which are phosphors. These phosphors emit colored light when struck by electrons. Red, green and blue light is emitted in mixtures that simulate a wide range of colors.
Filters offer another method for controlling the color of light.
They play an important role in digital scanners and cameras. Filters control the colors recorded by passing some colors and blocking others.