Near-infrared Definition

noun

(physics) Infrared light closest in wavelength to visible light, from .7 - 1.4 µm.

We know, from looking at an infrared image of a cat, that many things emit infrared light. But many things also reflect infrared light, particularly near infrared light. Near infrared radiation is not related to the temperature of the object being photographed - unless the object is very, very hot. "The Infrared" from The Electromagnetic Spectrum (National Aironautics and Space Administration, United States Goverment).
Wiktionary

Origin of Near-infrared

  • near (close to) + infrared (light with a wavelength longer than visble light)

    From Wiktionary

Near-infrared Sentence Examples

  • The beacons then fluoresce near-infrared light in response to light beaming from a small device outside the body.

  • Time resolution is limited by pulse length and can be as short as 20 fs in the visible and near infrared.

  • The reality is that incandescent lamps are really much better near infrared sources than visible light sources!

  • Determining water content in human nails with a portable near-infrared spectrometer.

  • Near-infrared spectroscopy of very faint galaxies very close to bright QSOs at 1 z 4 can be achieved with Gemini.

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