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Abstract
An improved mnemonic device for thermodynamic relations between state variables and potentials was proposed in the form of a thermodynamic circle. Based on separating the Born square into an inner square (T, P, V, and S) and an outer circle (G, A, U, and H), relations such as Legendre transforms, Maxwell equations, equations to compute variables, and differential equations for thermodynamic variables can be recalled easily. The thermodynamic circle has a cross-arrow at its center and can be used to intuitively determine the sign of all thermodynamic relations.
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References
- Natarajan, K., Graphical summaries for Maxwell relations of closed and open thermodynamic systems. Inter. J. Mech. Eng. Edu., 2014, 42, 1-17.
- Pate, S.F., The thermodynamic cube: a mnemonic and learning device for students of classical thermodynamics. Am. J. Phys., 1999, 67, 1111-1113.
- Phillips, J.M., Mnemonic diagrams for thermodynamic systems. J. Chem. Edu., 1987, 64, 674-675.
- Pogliani, L. and La Mesa, C., The mnemonic diagram for thermodynamic relationships. J. Chem. Edu., 1992, 69, 808-809.
- Rodriguez, J. and Bralnard, A.J., An improved mnemonic diagram for thermodynamic relationships. J. Chem. Edu., 1989, 66, 495-496.
- Fieberg, J.E. and Girard, C.A., Mnemonic device for relating the eight thermodynamic state variables: the energy pie. J. Chem. Edu., 2011, 88,1544-1546.
- Zhao, J.C., A mnemonic system for thermodynamics. MRS Bull., 2009, 34, 92-94.
References
Natarajan, K., Graphical summaries for Maxwell relations of closed and open thermodynamic systems. Inter. J. Mech. Eng. Edu., 2014, 42, 1-17.
Pate, S.F., The thermodynamic cube: a mnemonic and learning device for students of classical thermodynamics. Am. J. Phys., 1999, 67, 1111-1113.
Phillips, J.M., Mnemonic diagrams for thermodynamic systems. J. Chem. Edu., 1987, 64, 674-675.
Pogliani, L. and La Mesa, C., The mnemonic diagram for thermodynamic relationships. J. Chem. Edu., 1992, 69, 808-809.
Rodriguez, J. and Bralnard, A.J., An improved mnemonic diagram for thermodynamic relationships. J. Chem. Edu., 1989, 66, 495-496.
Fieberg, J.E. and Girard, C.A., Mnemonic device for relating the eight thermodynamic state variables: the energy pie. J. Chem. Edu., 2011, 88,1544-1546.
Zhao, J.C., A mnemonic system for thermodynamics. MRS Bull., 2009, 34, 92-94.