What is Thermodynamics? - Controlling variables in energy/heat systems. Thermodynamics discussed in the context of propulsion. Ideal Gas Law - Applet illustrating the ideal gas law : action of a piston in a pressure chamber filled with ideal gas. Thermodynamics and Its Applications - Companion site to the textbook by J. W. Tester and M. Modell, includes answers to selected problems and current errata. Applied Thermodynamics - Definition and short explanations of terms, units and basic principles. All Thermodynamics - from HyperPhysics portal. This is rather a comprehensive online physics handbook containing "Thermodynamics" chapter. Site has a handle navigation, good illustrations, and very detail content. Basic Terms and Theory - from Engineers Edge. A definitions, short explanations and connection of basic thermodynamics terms. Properties of Heat and Matter - Online book on Thermodynamics at UC Berkeley. Fundamentals of Thermodynamics - Lecture notes and problems from University of Pittsburg. Computational Thermodynamics - Calculation of metal phase diagrams using the CALPHAD method. Also offers consulting services. Mass, Energy, and Freedom - The Coins of Thermodynamics - The basis for thermodynamics. An introduction to the conservation of energy, states of matter and changes of state. Thermodynamics by Professor Z. S. Spakovszky - Basic thermodynamics course accompanied by lecture notes. Thermodynamics & Statistical Mechanics - Intermediate tutorial by Richard Fitzpatrick covers topics such as probability theory, heat and work, applications, and quantum statistics. From the University of Texas at Austin. Equation of State - Ideal Gas - Features equations describing the relationship between pressure, volume and pressure in gases. From NASA. The Expert System For Thermodynamics - TEST is a visual environment to solve thermodynamics problems, pursue what-if scenarios and perform numerical experiments. The Second Law of Thermodynamics by Frank L. Lambert - A qualitative introduction to the second law and entropy written for beginners in chemistry but useful for physics students too. Explains relationship with Murphy's Law.