Near-InfraRed Spectroscopy

Near-infrared light is light with a wavelength between 800 and 2,500 nanometers. In the electromagnetic spectrum, the near-infrared region lies between visible and infrared light. People cannot see near-infrared light, but they can feel it as heat. Near-infrared light has the advantage that relatively little light is absorbed, making it possible to analyse samples directly without dilution or other pre-treatments.