Français
2. Thermal radiation
2.1 Origin
According to the laws of thermodynamics, any body placed in an isothermal enclosure at a non-zero temperature T exchanges radiation with the enclosure, eventually reaching this temperature. With respect to radiation coming from its environment, the body exhibits, on its surface or in its volume, various types of behavior, such as absorption, reflection, transmission and diffusion, which can be defined as follows:
On the one hand, absorption is the ability of a material's atoms and molecules to trap a fraction of incident photons, transforming the corresponding energy into heat;
on the other hand, reflection, transmission and scattering are interaction processes between light and matter, each...
The Ultimate Scientific and Technical Reference
This article is included in
Optics and photonics
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Thermal radiation
Secondary emission sources
Bibliography
Radiometry. Thermal emission
Standardization
French Standards Association (AFNOR)
- Vocabulaire électrotechnique. Chapitre 845 : Éclairage [CEI 60050 (845)]. - NF C 01-845 - 3.89
Manufacturers. Suppliers
(non-exhaustive list)
Standard sources, black bodies
HGH Systèmes Infrarouges
Osram
Radiometers, luminance meters
Barnes Engineering
Perkin Elmer Optoelectronics (représentant : Polytec P.I. SA)
Hewlett-Packard
Li Cor Biosciences (représentant :...
The Ultimate Scientific and Technical Reference
