What occurs when a primary color of light is added to its corresponding secondary color?

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When a primary color of light is added to its corresponding secondary color, the result is white light. This phenomenon occurs because of the additive color mixing process, which is fundamental to light.

In the RGB color model, the primary colors of light are red, green, and blue. The secondary colors, created by mixing these primary colors in equal parts, are cyan (green and blue), magenta (red and blue), and yellow (red and green). For instance, if you add red light (a primary color) to cyan light (a secondary color made from green and blue), the result will include all three primary colors of light (red, green, and blue), which together produce white light.

This is different from subtractive color mixing, where colors can combine to create darker shades or even black when all colors are mixed together. In the additive process used for light, combining primary colors with their corresponding secondary colors saturates the light spectrum and leads to the creation of white light, which encompasses all colors.