Questions tagged [thermodynamics]
Covers the study of (primarily homogeneous) macroscopic systems from a heat/energy/entropy point of view. Consider also using the tag: [statistical-mechanics].
26 questions from the last 30 days
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RMS velocity for a Mixture of gases
How to find the RMS velocity for a mixture of gases? For example lets say i have n1 moles of hydrogen and n2 moles of helium at some temperature and pressure. What would be its RMS velocity?
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What are some Historical precedents (and their flaws) for a Geometrical Formulation of Thermodynamics?
I'm basically writing a report on the possibility of formulating Thermodynamics in terms of Manifolds, Differential forms and Exterior Algebra.
In my search I came across the formalism of ...
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Just started learning about black hole information paradox genuinely confused about who physicists actually support and why [closed]
I'm a computer science student who recently started reading about the black hole information paradox out of curiosity. I've gone through the basics Hawking's discovery, the No-Hair Theorem, Page's ...
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Can we define electric potential thermodynamically?
I am wondering if there exists some general thermodynamic definition of what electric potential is. Many textbooks on the topic that I have encountered have simply adopted an operational definition ...
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Why microwave water is not boiling? [closed]
I just found out about this, if you put water in microwave to heat it, it will not boiling. This make me really wonder, howwww? How could this microwave radiation be stored in water?
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Efficiency and definition of absorbed heat
I'm currently tutoring students of the first year in thermodynamics. One student asked me about something he did not understand in class. I'd like you to help me understand so that I can than help the ...
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Work vs heat defined by whether there is change in entropy?
I have problem understanding many basic concepts in thermodynamics. I understand the first law is just energy conservation in macroscopic level. I don't really understand the difference between work ...
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Is it feasible to generate energy from day-night temperature differences (Diurnal Thermal Generator concept)? [closed]
I am a 15-year-old student exploring an energy concept, and I apologize if my explanation is not perfect.
I am developing a concept called a Diurnal Thermal Generator (DTG), which aims to generate ...
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Would it be correct to classify all laws of Physics into Symmetry-based, Probabilistic, and Emergent-Statistical? [closed]
In a tangential discussion in my Information Theory class, the professor mentioned that the Second Law of Thermodynamics is not a "hard law" in the same sense as the First Law, but rather a ...
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Steady State from stochastic path integral - follow up
This is a follow up to my previous question: Detailed balance from stochastic path integral
The previous question tries to find for the SDE
$$dx = f(x) dt + g(x)\eta dt,$$
a relation between $f$ and $...
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Angular Momentum conservation in superfluids
If we rotate a superfluid above the critical temperature and then cool it down to a superfluid transition the conservation of angular momentum will create vortices. This is fine because as long as we ...
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Why pure ethanol evaporates slower than water-ethanol mixtures?
I have been conducting experiments using optical sensors to study the evaporation of droplets from water–ethanol mixtures. I repeated the measurements several times and consistently observed that pure ...
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Why is Ginzburg-Landau a mean-field theory?
Why and how is the Ginzburg–Landau (GL) theory regarded as a mean‑field theory (MFT), even though it incorporates a term that accounts for fluctuations? The critical exponents predicted by GL theory ...
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Thermodynamic Piston Problem [closed]
At the end of the thermally insulated cylinder with the piston there is a valve (figure) that covers a small hole,which opens and begins to let air from outside into the cylinder at a pressure ...
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Can cosmological horizons be consistently treated as thermodynamic systems with temperature and entropy?
in several areas of gravitational physics, horizons appear to exhibit thermodynamic properties. In
particular, black hole horizons are known to possess an entropy proportional to their area and a
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