Light is electromagnetic radiation - electricity and magnetism. When electromagnetism moves with high frequency, the light emitted can range from Gamma rays to ultraviolet light. When electromagnetism moves with a lower frequency, infrared, radar, and radio waves are formed. Light allows us to perceive the world around us with our sense of sight. The light visible to humans moves at a medium frequency, and the color spectrum ranges from red, orange, yellow, green, blue, indigo, and violet. White light is a reflection of all visible wavelengths. Whereas the color black, absorbs all visible light.