Black body radiation is electromagnetic radiation that is emitted by an object that is in thermodynamic equilibrium. An object is considered a perfect black body when it absorbs all of the incoming light and does not reflect any. It appears perfectly black at room temperature. At any given temperature the amount of radiation a black body emits is the maximum amount possible at that temperature. In theory a black body emits energy in the full spectrum of wavelengths, whether in the ultraviolet, visible, infrared spectrums as well as other wavelengths. Essentially the black body emits a known amount of energy for an infinite number of wavelengths. This enables to draw the expected black body radiation curve for a given temperature.