Incredible Visible Light Wavelength References. Most people can perceive wavelengths of between about 400 nanometres ( nm) and 780 nm visually. More simply, this range of wavelengths is called visible light.
Web electromagnetic radiation in this range of wavelengths is called visible light (or simply light). Most people can perceive wavelengths of between about 400 nanometres ( nm) and 780 nm visually. Web light waves have wavelengths between about 400 and 700 nanometers (4,000 to 7,000 angstroms).
