Basic Background Concepts

  • Moshe Elitzur
Part of the Astrophysics and Space Science Library book series (ASSL, volume 170)


On a microscopic level a gas is comprised of material particles at various levels of internal excitations, moving randomly in space (executing thermal or kinetic motions). The problem of the kinetic theory of gases is to determine the distributions of the thermal velocities and of the level populations. This task is complicated by the fact that these distributions are determined by the combined effects of a number of competing mechanisms, including collisions between the particles as well as various radiative processes.


Radiative Transfer Radiation Field Optical Depth Brightness Temperature Source Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media Dordrecht 1992

Authors and Affiliations

  • Moshe Elitzur
    • 1
  1. 1.Department of Physics and AstronomyUniversity of KentuckyLexingtonUSA

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