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Questions tagged [adiabatic]

Thermodynamic processes that occur without exchanging heat between the system and its environment.

0 votes
1 answer
50 views

Work done by adiabatic expansion derivation

I know that $W=-C_v(T_2-T_1)$ for an adiabatic expansion, and I know how to derive it. However, in this video (https://youtu.be/gaZmZjBtgAM?si=Px3v2qDG3CIdupgi&t=358) it mentions the formula $W=-\...
photon's user avatar
  • 93
0 votes
1 answer
48 views

Maxwell's relations and adiabats

I was trying to understand problem regarding finding the adiabatic modulus given the isothermal young's modulus. I'm still an amateur in thermodynamics. I just didn't understand the final step where ...
ilawid's user avatar
  • 51
0 votes
3 answers
135 views

Why does adiabatic expansion occur in the Carnot cycle?

Several people have asked this question before and I haven't found any of the explanations even remotely satisfying. To begin, Let's imagine our system consists of an ideal gas enclosed in a cylinder ...
Zachary Candelaria's user avatar
2 votes
0 answers
224 views

Understanding adiabatic elimination in three-level system coupled to EM field

I am having some difficulties understanding the "adiabatic elimination" in the context of atomic physics. In particular, consider a three-level system with states labeled by $|g_1\rangle$, $|...
Matteo's user avatar
  • 3,014
0 votes
0 answers
135 views

Effect of Uniform Motion on Internal Energy of an Ideal Gas in an Isolated container [duplicate]

“The internal energy of a gas contained in a beaker is U, if the box starts moving with velocity V, then internal energy of the gas will be...” Elaboration So, further explaining the situation, we ...
Ansh's user avatar
  • 1
2 votes
1 answer
134 views

How to prove that $\gamma \le 2$ for *causal* relativistic polytrope fluids?

The definition of the adiabatic index of a relativistic polytrope fluid is this: $$\tag{1} \gamma = \frac{\rho + p}{p} \, \frac{dp}{d\rho}, $$ where $\rho$ is the energy density (not the mass density)....
Cham's user avatar
  • 7,592
1 vote
1 answer
24 views

The work and reversibility of an adiabadically stretched band

I currently working on this. More specifically I have a question about Problem 2.8 (solution on page 34 and exercise on page 25 of the pdf). I have 4 questions 1. In the solution for b) the author ...
Peter Mafai's user avatar
4 votes
0 answers
265 views

Implement Adiabatic Elimination on Hamiltonians?

Adiabatic elimination is the process of truncating a Hamiltonian's Hilbert space to the "slow" states you care about. You throw out the "fast" eigenstates to produce a smaller ...
KF Gauss's user avatar
  • 7,931
1 vote
2 answers
152 views

Adiabatic free expansion into vacuum

Consider an adiabatic vessel with a partition and a plug in the partition wall. On one side of the partition, there is gas at certain pressure and on the other side of partition there is perfect ...
arjun gopan's user avatar
2 votes
1 answer
209 views

Question regarding Adiabatic Process

In an adiabatic process, that is a process in which mathematically $dQ=0$, $PV^γ=\text{constant}$. Now my question is that do we have a value for this constant? This is because just like for ...
Sarban Bhattacharya's user avatar

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