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Understanding Equation Form

  1. Jan 23, 2013 #1
    Hi,

    Example:

    Maxwell Relation (thermoD)...


    ([itex]\frac{∂μ}{∂T}[/itex])[itex]_{p,n}[/itex] = - ([itex]\frac{∂S}{∂n}[/itex])[itex]_{T,p}[/itex]

    what does it mean having those subscript variables outside of the brackets.

    thanks
     
  2. jcsd
  3. Jan 23, 2013 #2

    mfb

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    Staff: Mentor

    They are kept constant in the process. For example, the left side is the change of µ if you change T, but keep p and n constant.
     
  4. Jan 23, 2013 #3
    post#2 of https://www.physicsforums.com/showthread.php?t=666011

    gives an example of the use of this for deriving one of Maxwells relations

    Have you studied partial differentiation?
     
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