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I Entropy Change in Time of Universe

  1. May 5, 2017 #1
    Is there something like ##\frac {dS\dt}=...## Like in the general system,

    I know its always positive but I want to know is there any constant quantity of the universe like universe entropy increases amount of 45J/C or something like that.Or it depends only the knows closed systems which we ca find numerical values.
    Thanks
     
  2. jcsd
  3. May 5, 2017 #2

    mfb

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    2016 Award

    Staff: Mentor

    No.
    It is problematic to define an "entropy of the overall universe", but no matter what you do, the time derivative is not constant.
     
  4. May 6, 2017 #3
    Yeah you are right it cannot be constant.I see well thanks then
     
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