In tomorrow's lecture I will talk about immiscible liquids. This shows the importance of entropy of mixing. The temperature-composition phase diagram of two partially immiscible liquids has a critical point. There is a nice video of the critical opalescence associated with the critical point for the cyclohexane-methanol mixture. An Excel spreadsheet for the thermodynamic data is here.
The simple analytical formula for mixing of a regular solution shows how the competition between energy and entropy which drives phase transitions.
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Lecture on Debye model for solids
I just finished preparing my undergraduate lecture on the Debye model for solids. Here are my slides . The course is a third-year course on...
My father got very worried when I explained to him that the orientability of a cellular surface - on which our existence as thinking salt-water bags relies - was due to no stronger interaction than the separation of salad dressing.
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