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A Thermodynamics relations

  1. May 6, 2017 #1
    Thermal coefficient of pressure is defined by
    [tex]\gamma=\frac{1}{P}(\frac{\partial P}{\partial T})_V [/tex]. Why in books authors uses ##\gamma=\gamma(P,T)## and no ##\gamma=\gamma(P,T,V)##. Could you explain me this. I am sometimes confused with this dependences in thermodynamics.
     
  2. jcsd
  3. May 6, 2017 #2
    From the equation of state, V=V(P,T), so there are really only to independent variables.
     
  4. May 6, 2017 #3
    Ok. Thanks. But why not ##\gamma=\gamma(T,V)##?
     
  5. May 6, 2017 #4
    That can be done, but it's not as convenient for calculations.
     
  6. May 7, 2017 #5
    Thanks.
     
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