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3.2 Entropy
Entropy is a fundamental idea in thermodynamics. It measures how spread out the energy of a system is, which is why it is often described as disorder.
Many microscopic arrangements of particles can produce the same macroscopic state. Boltzmann connected the two: S = k log W, where W counts the possible arrangements.
The more ways a system can be arranged, the higher its entropy.
Thermodynamics_Lecture_04.pdf
3.2 Entropy · Read · Maya
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3.3 The second law
The second law of thermodynamics says the total entropy of an isolated system never decreases over time.
In practice, energy spreads out, and less of it stays available to do useful work. A hot drink cools to room temperature; it never warms itself back up.
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Week 3 · Working memory
Working memory holds a small amount of information for a few seconds while we use it.
Baddeley and Hitch described several parts working together: a central executive that directs attention, a phonological loop for words and sounds, and a visuospatial sketchpad for images.
Most adults can hold about four chunks at once, which is why grouping information helps.
2 words need a quick check.
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80 slides.34 minutes.*One walk home.
* Estimate for an 80-slide deck at about 64 words a slide, read at 150 words a minute. Real length depends on your material and mode.
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Thermodynamics_Lecture_04.pdf
3.2 Entropy
Entropy is a fundamental idea in thermodynamics. It measures how spread out the energy of a system is, which is why it is often described as disorder.
Many microscopic arrangements of particles can produce the same macroscopic state. Boltzmann connected the two: S = k log W, where W counts the possible arrangements.
The more ways a system can be arranged, the higher its entropy.
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Monday, June 10
3.2 Entropy
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3.2 Entropy
Entropy is a fundamental idea in thermodynamics. It measures how spread out the energy of a system is, which is why it is often described as disorder.
Many microscopic arrangements of particles can produce the same macroscopic state. Boltzmann connected the two: S = k log W, where W counts the possible arrangements.
The more ways a system can be arranged, the higher its entropy.
3.2 Entropy · Read
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