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Patent Granted Infrared (IR) is invisible radiant energy, electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometers (frequency 430 THz) to 1 mm (300 GHz)[1] (although people can see infrared up to at least 1050 nm in experiments[2][3][4][5]). Most of the thermal radiation emitted by objects near room temperature is infrared.
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