Examples of Addition and Subtraction of Light
- Computer monitors and television
Computer monitors and televisions are the most common examples of additive color. Examination with a sufficiently powerful magnifying lens will reveal that each pixel in CRT, LCD and most other types of color video displays is composed of red, green and blue sub-pixels, the light from which combines in various proportions to produce all the other colors as well as white and shades of gray. The colored sub-pixels do not overlap on the screen, but when viewed from a normal distance they overlap and blend on the eye's retina, producing the same result as external superimposition.
2. Coloured lights on stage
The principle of the addition of light is used to produce the attractive lightning effect in concert shows
3. Photography
The principle of the subtraction of light is applied in photography or videography to produce a specific visual effect.
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