Thermodynamics

Basic Thermodynamics - The basis for thermodynamics. An introduction to the conservation of energy, states of matter and changes of state.
http://web.mst.edu/~gbert/basic/thermo.html

Thermodynamics from Prof. Ian Waitz - Basic thermodynamics course of 12 lectures, contains else the self-control questions with statistics of answers.
http://web.mit.edu/16.unified/www/FALL/thermodynamics/index.html

Carnot cycle - Applet showing the physics processes of a Carnot heat engine by Fu-Kwun Hwang of the National Taïwan Normal University.
http://www.phy.ntnu.edu.tw/java/carnot/carnot.html

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.
http://hyperphysics.phy-astr.gsu.edu/hbase/heacon.html#heacon

Thermo Fluids Engineering - web page of the division of the Eindhoven University of Technology which study processes where fluid flows and heat transfer play a prominent role.
http://www.tfe.wtb.tue.nl

Ideal Gas Law - Applet illustrating the ideal gas law : action of a piston in a pressure chamber filled with ideal gas.
http://jersey.uoregon.edu/vlab/Piston/index.html

About Temperature - A very basic (prepared for the middle school math teachers) tutorial but still useful for professionals.
http://my.unidata.ucar.edu/content/staff/blynds/tmp.html

Thermodynamics and Its Applications - Companion site to the textbook by J. W. Tester and M. Modell, includes answers to selected problems and current errata.
http://web.mit.edu/testerel/thermo/

Thermodynamics - Controlling variables in energy/heat systems. Thermodynamics discussed in the context of propulsion.
http://www.grc.nasa.gov/WWW/K-12/airplane/thermo.html

The Second Law of Thermodynamics - 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.
http://www.secondlaw.com

Thermodynamics Research Laboratory - Classical, Quantum, Nanoscale and Statistical Thermodynamics and Mechanics data and property calculation sites.
http://tigger.uic.edu/~mansoori/Thermodynamic.Data.and.Property_html

Basic Terms and Theory - from Engineers Edge. A definitions, short explanations and connection of basic thermodynamics terms.
http://www.engineersedge.com/thermodynamics/table_contents.htm

Applied Thermodynamics - Definition and short explanations of terms, units and basic principles.
http://www.taftan.com/thermodynamics/

Computational Thermodynamics - Calculation of metal phase diagrams using the CALPHAD method. Also offers consulting services.
http://www.calphad.com/

Fundamentals of Thermodynamics - Lecture notes and problems from University of Pittsburg.
http://puccini.che.pitt.edu/~karlj/Classes/CHE2101/

Properties of Heat and Matter - Online book on Thermodynamics at UC Berkeley.
http://www.mip.berkeley.edu/physics/bookcdx.html

Thermodynamic Toys - Contains directions for making toys with thermodynamics background.
http://www.scitoys.com/scitoys/scitoys/thermo/thermo2.html

Thermodynamics and Statistical Physics - Collection of educational sites explaining all aspects of thermodynamics.
http://sky.net.co/physics/termo.html

Thermodynamics and Thermal Physics - About.com's index to thermodynamics information.
http://physics.about.com/cs/thermodynamics/index.htm

Internal Combustion Engines Web Site - Thermodynamics and heat transfer in Internal combustion engine. Applets are used to perform simple calculations. Developed at Colorado State University.
http://www.engr.colostate.edu/~allan/engines.html

The Expert System For Thermodynamics - TEST is a visual environment to solve thermodynamics problems, pursue what-if scenarios and perform numerical experiments.
http://energy.sdsu.edu/testcenter/