Visible light spectrum. The visible light region of the electric magnetic spectrum is a very narrow band of wavelengths located to the right of the infrared region and to the left of the ultra violet region. Though the electric magnetic wave exists in a vast range of wavelengths, our eyes are sensitive only to a very narrow band. Since this narrow band of light waves is the means by which human See, we refer to this as the visible light spectrum. This visible light region consists of a spectrum of wavelengths that range from approximately 700 nanometers to approximately 400 nanometers. This narrow band of visible light is affectionately known as that, ah YTB IV, otherwise known as the red, orange, yellow, green, blue indigo violet spectrum, and it's only 300 nanometers across.

Isaac Newton showed that light shining through a prism will be separated into its different wavelengths. The separation of visible light into its different colors is known as dispersion. To find out more about color, and control of color, and lies, enroll in one of my other color courses.