Electromagnetic radiation that can be used in heat or light therapy.
Beyond the red end of the spectrum.
Relating to infrared radiation.
That portion of the electromagnetic spectrum with a wavelength between 10-5 m and 10-4m (1 -10μm). Equivalently, an infrared photon has an energy of between 0.01 and 1 .0 eV.
A form of radiation that emits energy as electromagnetic waves just beyond the limit of the red portion of the spectrum’s visible rays. Infrared wavelengths are shorter than radio wavelengths and longer than those for light, and they may be detected as heat. Special infrared heat lamps used in physical therapy emit natural, safe, short-wave infrared heat for the temporary relief of pain associated with many conditions, including muscular pain, sore muscles, arthritis, bursitis, backache, tennis elbow, aching joints, and related pains.
Lying outside the red end of the visible spectrum.