+Infrared radiation (IR) is a type of [Electromagnetic Radiation](/wiki/electromagnetic_radiation), invisible to the human eye, with wavelengths longer than visible [Light](/wiki/light). It is commonly perceived as [Heat](/wiki/heat) and is emitted by any object possessing thermal energy.
+## See also
+- [Radiation](/wiki/radiation)
+- [Thermal Energy](/wiki/thermal_energy)
+- [Wavelength](/wiki/wavelength)