Blackbody radiation is electromagnetic radiation emitted by an object that is in thermodynamic equilibrium. An object is considered to be a perfect blackbody if it absorbs all the incident light and reflects nothing. It appears perfectly black at room temperature. At any given temperature, the amount of radiation emitted by a blackbody is the maximum possible at that temperature.
Blackbody sources are necessary for the development of thermal imaging systems as they provide consistent, highly accurate reference values.
