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COLORED LIGHT |
(By way of Addition and Subtraction) |
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| When dealing with light, (and in layman's terms), there are three primary colors of light: red, green and blue. All three primary colors combined will produce white light when they are added to one another. This is easy to display. All one would need are three search lights or a projector with three lenses; along with sheets of red, green and blue ascetate plastic or colored glass lenses or filters. Just cover the lens of the search light or projector, turn the power on, and beam all three lights onto the same area. Play around with adding or subtracting the various lights, and you will see what is being decribed in the above graphic. For example, by subtracting the blue light, one could not produce white light. What will be produced is a yellow light by the adding of red and green only. |
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COMPLMENTARY COLORS |
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| As you can see from the diagram above, a complementary color is formed by combining the two other primary colors. Three secondary or complementary colors are available to us: yellow, magenta and blue-green. From left to right: red and green when added together form yellow. Red and blue combined form a magenta; while green and blue blend together to form a blue-green or teal. What is interesting is this: Were we to beam any of the three complementary colors and place them together with any one of the three primary colors we would still end up with white light. Were we to block off or subtract any color in the spectrum, the remaining colors would form its complement. In other words, in order to create white light, our light spectrum needs all three primary colors, red, green and blue in some form or combination. Another way of saying that is this: Complementary colored lights are any two colors that can create white light when blended together. For example, yellow and blue-green can produce a white light. This is so because yellow is really a combination of red and green. Hence the condition of having all three primary colors is met. |
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