User:The Lamb of God/sandbox-Black Body

Approximate black bodies

Although a Black Body is a theoretical object, (emmisivity (e) = 1.0), common applications define a source of Infrared radiation as a Black Body when the object approaches an emmisivity of 1.0, (typically e = .99 or better); a source of Infrared radiation less than .99 is refered to as a greybody. Applications for Black Bodies typically include the testing and calibration of Infrared systems and Infrared sensor equipment.

File:ES cavity black body.jpg

A typical cavity black body used as a source of infrared radiation for the testing and calibration of infrared systems and equipment