Light is any wavelength of electromagnetic radiation, though the word is commonly used to refer to the visible light spectrum. The human eye typically perceives electromagnetic wavelengths between 400 and 700 nanometers, interpreting them as a range of colors from red to violet. Light is understood to exhibit both particle and wave properties, and the fundamental particle, or quantum, of light is called the photon. What is the scientific study of light called? Discuss
Source: The Free Dictionary