- #1
sisife
- 2
- 0
Hello!
I'm trying to grasp the "intuitive" meaning of the thermodynamical potetials E,F,H and G, or at least of their connections.
As in other threads before mentioned, I learned that you can't real.y give an meaningful definition of energy , so I assume for the other potentials this is also true.
But at least I have a kind of intuition what energy is, in contrary to the other quantities.
I tried to understand G by considering a quasistatic process. Then Q=TS and W=PV. So G=E-TS-PV is the energychange in a system in a non-quasi-static process (e.g. due to friction etc., or due to a difference in the entropy change (but here I am confused about, how this is connected)). Is this correct?
Are there nice ways to illustrate the other ones? Or is this simply a waste of time? (if I don't have an ituition for what I am doing I always find it difficult to find solutions for a problem).
thanks for your help
I'm trying to grasp the "intuitive" meaning of the thermodynamical potetials E,F,H and G, or at least of their connections.
As in other threads before mentioned, I learned that you can't real.y give an meaningful definition of energy , so I assume for the other potentials this is also true.
As for what energy 'is', you could just as easily as "What is 'red'? The fact that a simple answer doesn;t exist does not make the concept any less useful.
But at least I have a kind of intuition what energy is, in contrary to the other quantities.
I tried to understand G by considering a quasistatic process. Then Q=TS and W=PV. So G=E-TS-PV is the energychange in a system in a non-quasi-static process (e.g. due to friction etc., or due to a difference in the entropy change (but here I am confused about, how this is connected)). Is this correct?
Are there nice ways to illustrate the other ones? Or is this simply a waste of time? (if I don't have an ituition for what I am doing I always find it difficult to find solutions for a problem).
thanks for your help