Non equilibrium conditions and temperature

  1. For non-equilibrium conditions, can temperature be defined?
    Does this relate to the zeroeth law of thermo?

    Thanks!
     
  2. jcsd
  3. Andy Resnick

    Andy Resnick 5,744
    Science Advisor

    Sometimes a temeprature can be formally defined: the temperature of a 2-state atomic population during inversion, for example.

    Generally, it is not possible to assign a unique temperature.
     
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