Heat is a branch of thermodynamics that occupies a unique position due
to its involvement in the field of practice. Being linked to the
management, transport and exchange of energy in thermal form, it
impacts all aspects of human life and activity.
Heat transfers are, by nature, classified as conduction, convection (which
inserts conduction into fluid mechanics) and radiation. The importance
of these three transfer methods has resulted justifiably in a separate
volume being afforded to each of them. This second volume is dedicated
to radiation. After recalling photometry, the calculation of luminance is
addressed using the theory of the black body and associated laws: Stefan,
Wien. The reciprocal radiation of two surfaces in total influence is
discussed extensively, and the case of finished surfaces is also
Heat Transfer 2 combines a basic approach with a deeper understanding
of the discipline and will therefore appeal to a wide audience, from
technician to engineer, from doctoral student to teacher-researcher.