A

David

Darling

visible light

visible light spectrum

Visible light is electromagnetic radiation that can be detected by the human eye. It extends from a wavelength of about 780 nanometers (780 × 10-9 meter) at the red end of the spectrum to one of 380 nm (violet light). Visible light spans the divide between infrared and ultraviolet radiation.

For more information, see the article on light.