what is the wavelength of the longest wavelength light visible to the human eye?
Answers. Best Answer: See if this helps you any.......... Our eyes are sensitive to light which lies in a very small region of the electromagnetic spectrum labeled visible light. This visible light corresponds to a wavelength range of 400 - 700 nanometers (nm) and a color range of violet through red. The human eye is not capable of seeing radiation with wavelengths outside the visible spectrum.