Mixing color light is called additive color mixing, because the combined colors are formed by the adding of light from two or more light sources together. Two or more lights added together will give more illumination than any of the lights by themselves. The primary colors of light are red, green and blue.
What is light? How does it travel, and how fast can it go? Even as a teenager, Einstein was fascinated by the nature of light. When he was just 16 years old, Einstein tried to imagine what it would be like to ride on a beam of light. Could he travel as fast as light? Could he travel faster?