Radiate of common material infrared ray leads a list

Black lead of carbon of 100 0.61 of oxidation of brass of 20 0.95 of soot of candle of carbon of 100 0.55 of aluminous oxidation of 20 0.93 of surface of brick of 100 0.03 of brass polish of 100 0.07 of film of stannum of 100 0.05 of aluminous polish of emissive rate of temperature of state of surface of data of emissive rate of temperature of material surface state is coarse iron of 20 0.94 of surface polishing of glass of 20 0.78 of oxidation of copper of 20 0.92 of surface of concrete of 100 0.05 of polish of exterior 20 0.98 copper is cast-iron2006-12-7