What happens when mixing a little bit of red with some yellow paint? Typically, orange.
RGB Additive MixingWhat if you could mix together different colors of light? We took three colored spotlight beams, one red, one green and one blue, aimed them at a white brick wall and looked at the results. Click the picture to the right for a closer look. Where two beams overlapped, a different color was produced. Where all three beams overlapped in the center, there was white. By varying the intensities of the red, green and blue lights we could create almost any color of the rainbow. The scientists call it ‘additive color’ because they are added together. The rest of the world calls it RGB (Red Green Blue) technology.
Same LED can change colours some of the latest Light Emitting Diode (LED) technology puts the equivalent of a separate red, green and blue light source into what looks like one bulb. By varying the intensities of the red, green and blue sources, the light appears to change in to pixel light. They’re called RGB LEDs. Start thinking of the possibilities. You create the final colour by controlling the individual brightness of red, green and blue. That’s three control channels and it’s typically called a pixel.