All Questions
Tagged with terminology thermodynamics
119
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Is there a practical distinction between functions of state and functionals in thermodynamics?
In thermodynamics, and more precisely when talking about continuous systems, some sources [1, 2] introduce functionals of state:
$$F[s(x), \dots]:=\int_VdV(x)f(s(x),\dots,x)$$
In order to derive ...
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What is a name of a critical point?
Imagine a critical line separating two thermodynamic phases. There is a point on this line splitting the line into two pieces such that on one piece the transition between the two phases is 1st order, ...
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What do we call a material property that has non-equal values when evaluated in opposite directions?
What do we call a material property that has non-equal values when evaluated in opposite directions?
That is, if the material property $k_{ij}$ has a value of $X$ along the direction defined by the ...
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What is the difference between quantum thermodynamics and nonequilibrium QFT?
I see a lot of books of Nonequilibrium QFT and they study the thermodynamics on quatum realms, but what is the difference about that and Quantum Thermodynamics? They study the same thing only with ...
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The fundamental equation of a system
I was reading Thermodynamics and an I（second edition） by Callen and thinking about the problem in P92.
A particular system is constrained to a constant mole number and volume so that no work can be ...
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Thermal and non-thermal radiation
The definition of thermal radiation given by Zemansky ("Heat and thermodynamics", pag 95) is the following:
"The radiation emitted by a solid or a liquid by virtue of its own
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Internal Energy of Water During Vaporization [duplicate]
This is a dumb question, but I am pretty certain that water vapour has higher energy than water as you do work in raising the intermolecular potential energy. However, water vapour molecules at 100$^{\...
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What are these two equations related to Maxwell-Boltzmann Distribution called? [closed]
I have come across these two equations on Maxwell-Boltzmann Distribution:
and
May I please know what the equations are called so I can read up more about them?
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What is the difference between a macrostate and an ensemble?
I'm not entirely sure about the difference between a macrostate and an ensemble, though I think they are different. To me, it seems correct that both terms can be used to refer to a collection of ...
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Tea stored in a thermos is an isolated system or closed system?
My opinion is that since we can create some extra motion in tea by shaking it we will be providing some extra kinetic energy to tea and thus increase in internal energy and therefore it is only a ...
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Name for a certain 1D lattice model
I have encountered a physical system where the microstates are described by a vector $$k = \left[k_1, k_2, \ldots, k_n\right]$$ where all the $k_i$ are strictly positive integers smaller than some $k_{...
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A rigorous definition of thermodynamic properties
Thermodynamics studies matter from a macroscopic viewpoint. We describe matter using macroscopic quantities such as pressure, volume, density, mass, etc. I read that not all macroscopic quantities are ...
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What is the difference between an equation of state, and a state function?
Wikipedia seems to list them as two different things, (Equation of State, State Function); however, it seems like both pages are describing the same thing. Is there really any difference between the ...
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Is thermodynamics a physical theory? [closed]
It looks like to me that whenever we need to describe something we start from observations which lead to a theory. All theories seem to rely on laws:
theory of classical mechanics
Newton's laws
...
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Is there a good name for the class of assumptions encoded in "isochoric," "isobaric," "isothermal" etc.?
As stated, I'm simply wondering if there is some way to describe holding, or assuming any single one of those state-variables constant.
Something like isounicratic ...
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