Visible light

Visible light (sometimes referred to as light) is a form of electromagnetic radiation and is the only part of the electromagnetic spectrum humans can see hence the name,which has a frequency of 10^15 hertz and there is a spectrum of visible light which is known as ROYGBIV Red has a wavelength of 700nm, Orange has a wavelength of 620nm, Yellow has a wavelength of 580nm Green has a wavelength of 530nm, Blue has a wavelength of 475nm, Indigo has a wavelength of 425nm and Violet has a wavelength of 400nm