What is the wavelength range of visible light?

The wavelength range of visible light is from 400 to 700 nanometers. This range is crucial for human vision, as it encompasses the spectrum of light that our eyes can detect, allowing us to perceive colors ranging from violet at the lower end of the spectrum (around 400 nm) to red at the higher end (around 700 nm).

Light outside of this range, such as ultraviolet and infrared, falls beyond what the human eye can perceive; ultraviolet light has shorter wavelengths (below 400 nm), while infrared light has longer wavelengths (above 700 nm). Understanding the characteristics of visible light is essential in various fields such as optics, biology, and even photography, where color representation is vital.