RGB pixels | Light | Physics

When we sprinkle water droplets on a screen of a CRT television, we see spots of red, green and blue in the water droplets. A CRT lights up the screen by the means of phosphors coated on the inside surface of the screen. These phosphors are present in groups of three - red, green and blue. The various colours produced on the screen are a result of by lighting the appropriate phosphors at the appropriate intensity. The water droplets allow us to see the pixels by magnifying them.

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