Visible light

Visible light is a form of electromagnetic radiation.

  • Visible light is the range of wavelengths of electromagnetic radiation that are perceived as colour by a human observer.
  • The range of wavelengths that produce visible light is a very small part of the electromagnetic spectrum.
  • Other forms of electromagnetic radiation include radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays.
  • Visible light is perceived by a human observer as all the spectral colours between red and violet plus all the other colours that result from mixing them together in different proportions.
  • The complete range of colours that can be perceived by a human observer is called the visible spectrum.