![radiant heat radiant heat](https://cdnassets.hw.net/f1/a3/ec31179b4d5f89d22aded1af2bd4/radiant-heat-wood-floors.jpg)
Thermal radiation reflects the conversion of thermal energy into electromagnetic energy. Thermal radiation is the emission of electromagnetic waves from all matter that has a temperature greater than absolute zero. 2.2 Subjective color to the eye of a black body thermal radiator.
![radiant heat radiant heat](https://cdn.vox-cdn.com/thumbor/rKu_YlG6oV7SukoME5udrstdBZs=/1400x0/filters:no_upscale()/cdn.vox-cdn.com/uploads/chorus_asset/file/19490066/oct2006radiant01lg_0.jpg)
Thermal radiation is also one of the fundamental mechanisms of heat transfer. Wien's displacement law determines the most likely frequency of the emitted radiation, and the Stefan–Boltzmann law gives the radiant intensity. Planck's law describes the spectrum of blackbody radiation, which depends solely on the object's temperature. If a radiation object meets the physical characteristics of a black body in thermodynamic equilibrium, the radiation is called blackbody radiation. Infrared radiation emitted by animals (detectable with an infrared camera) and cosmic microwave background radiation are examples of thermal radiation. Particle motion results in charge-acceleration or dipole oscillation which produces electromagnetic radiation. All matter with a temperature greater than absolute zero emits thermal radiation. Thermal radiation is generated when heat from the movement of charges in the material (electrons and protons in common forms of matter) is converted to electromagnetic radiation. Thermal radiation is electromagnetic radiation generated by the thermal motion of particles in matter. Infrared cameras are capable of capturing this infrared emission (see Thermography). Its emission in the infrared is invisible to the human eye.
![radiant heat radiant heat](https://s3.amazonaws.com/finehomebuilding.s3.tauntoncloud.com/app/uploads/1996/11/07152502/Hydronic-Radiant-Floor-Heating.jpg)
Thermal radiation in visible light can be seen on this hot metalwork.