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Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with waves that are just longer than those of red light (the longest waves in the visible spectrum), so IR is invisible to
5 days ago · Infrared radiation, that portion of the electromagnetic spectrum that extends from the long wavelength, or red, end of the visible-light range to the microwave range. Invisible to the eye, it can be detected as a sensation of warmth on the skin.
Feb 27, 2019 · Within the electromagnetic spectrum, infrared waves occur at frequencies above those of microwaves and just below those of red visible light, hence the name "infrared."
Aug 10, 2016 · Learn about infrared waves, part of the electromagnetic spectrum that humans can detect as heat. Explore how infrared waves are used for thermal imaging, astronomy, and Earth observation by NASA.
Aug 16, 2013 · Learn about infrared light, a form of light that we can not see but that we can feel as heat. Discover how infrared light is related to temperature, color, and the electromagnetic spectrum, and how astronomers use it to study the cool cosmos.
Oct 14, 2010 · How does NASA "see" thermal radiation? This video explores what infrared energy is and how NASA detects it to study our Earth's systems more completely.
Infrared light is an electromagnetic radiation between microwave and visible light, with a wavelength of 0.78 ∼ 1000 μm, including near-infrared (NIR, 0.78 ∼ 1.4 μm), short-wavelength infrared (SWIR, 1.4 ∼ 3.0 μm), mid-wavelength infrared (MWIR, 3.0 ∼ 8.0 μm), and long-wavelength infrared (LWIR, 8.0 ∼ 15.0 μm) [1,2].
