CNET GLOSSARY: Terms for the techie
A CRT monitor uses three electron guns (red, green, and blue) to excite the phosphors that make up the pixels in an image. Color balance refers to the relative strength of the signal from each of the three guns. If the blue gun is turned up higher than the other two, for example, you will see a bluish tint on the screen. Many monitors provide color-adjustment controls that allow you to adjust the color balance.
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