<P> Infrared radiation , or simply infrared or IR , is electromagnetic radiation ( EMR ) with longer wavelengths than those of visible light , and is therefore invisible , although it is sometimes loosely called infrared light . It extends from the nominal red edge of the visible spectrum at 700 nanometers ( frequency 430 THz ) , to 1 millimeter ( 300 GHz ) ( although specially pulsed lasers can allow humans to detect IR radiation up to 1050 nm . ) . Most of the thermal radiation emitted by objects near room temperature is infrared . Like all EMR , IR carries radiant energy , and behaves both like a wave and like its quantum particle , the photon . </P>
<P> Infrared radiation , or simply infrared or IR , is electromagnetic radiation ( EMR ) with longer wavelengths than those of visible light , and is therefore invisible , although it is sometimes loosely called infrared light . It extends from the nominal red edge of the visible spectrum at 700 nanometers ( frequency 430 THz ) , to 1 millimeter ( 300 GHz ) ( although specially pulsed lasers can allow humans to detect IR radiation up to 1050 nm . ) . Most of the thermal radiation emitted by objects near room temperature is infrared . Like all EMR , IR carries radiant energy , and behaves both like a wave and like its quantum particle , the photon . </P>
where is infrared located on the electromagnetic spectrum
where is infrared located on the electromagnetic spectrum
from the nominal red edge of the visible spectrum at 700 nanometers ( frequency 430 THz ) , to 1 millimeter ( 300 GHz ) ( although specially pulsed lasers can allow humans to detect IR radiation up to 1050 nm . )
from the nominal red edge of the visible spectrum at 700 nanometers ( frequency 430 THz ) , to 1 millimeter ( 300 GHz ) ( although specially pulsed lasers can allow humans to detect IR radiation up to 1050 nm . )