Blending light


Long before anyone really understood why, a few scientists noticed that by shining red, green, and blue lights together and varying the brightness of each light, they could create many colors. Your computer and TV screen generate colors in a similar way!
Mixing red, green, and blue light to create many colors is called additive color mixing. See what happens when you overlap red, green, and blue light below!
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This demo shows how color addition works on your TV set (or computer monitor). The Red, Green, and Blue (RGB) colors (known as primary colors) can be 'mixed' to produce any other color. The absence of all three colors gives black, while the proper ratio of all three produces white. After turning on the various spotlights, you can drag the colors around the screen to explore different color mixing.

(Back) Mix your own colors




 

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