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Lecture 21: Alloys, Mixing, and Phase Separation
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Oil and water -- they don't mix. Or do they? Due to the entropy of mixing, any tiny amount of impurity is highly favored entropically. This means that in general, you can get a small amount of a substance to mix into another. But take that too far, and they no longer mix, but "phase separate" into 2 different concentrations. We discuss this from the following perspectives: energy, entropy, and free energy. Examples: binary alloy with interactions, and a mixture of He3 (fermions) and He4 (bosons).
Class discussion: Can you get oil and water to mix if you heat them in a pressure cooker?
Lecture Audio
…
continue reading
Class discussion: Can you get oil and water to mix if you heat them in a pressure cooker?
Lecture Audio
27 episodes
MP3•Episode home
Manage episode 124809359 series 132989
Content provided by Prof. Carlson. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Prof. Carlson or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://player.fm/legal.
Oil and water -- they don't mix. Or do they? Due to the entropy of mixing, any tiny amount of impurity is highly favored entropically. This means that in general, you can get a small amount of a substance to mix into another. But take that too far, and they no longer mix, but "phase separate" into 2 different concentrations. We discuss this from the following perspectives: energy, entropy, and free energy. Examples: binary alloy with interactions, and a mixture of He3 (fermions) and He4 (bosons).
Class discussion: Can you get oil and water to mix if you heat them in a pressure cooker?
Lecture Audio
…
continue reading
Class discussion: Can you get oil and water to mix if you heat them in a pressure cooker?
Lecture Audio
27 episodes
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