When Mixing all colors of blank light together creates white light?

When mixing all colors of light together, such as red, green, and blue (the primary colors of light), they combine additively to produce white light. This phenomenon occurs because light is made up of electromagnetic waves, and when these waves overlap, their wavelengths combine to create the perception of white. This is the principle behind devices like computer screens and televisions, which use combinations of colored light to produce a full spectrum of colors. In contrast, mixing pigments (subtractive color mixing) typically results in darker colors.