Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with entropy
Search options not deleted
user 282830
An important extensive property of all systems in thermodynamics, statistical mechanics, and information theory, quantifying their disorder (randomness), i.e., our lack of information about them. It characterizes the degree to which the energy of the system is *not* available to do useful work.
0
votes
Understanding Clausius' inequality for irreversible process
In Clausius theorem for second law of thermodynamics, the temperature in the integrand is the temperature of the reservoir, not the system:
$$
\oint \frac{\delta Q}{T_{surr}}.
$$
Therefore, there ex …
- 4,314
0
votes
Why change in entropy in reversible adiabatic process is zero?
For an ideal gas $PV = n RT$, the expression of entrop can be calculate:
\begin{align}
dS =& \frac{dU}{T} + \frac{PdV}{T};\\
=& n C_v \frac{dT}{T} + nR\frac{dV}{V};\\
\end{align}
Carry out the integ …
- 4,314
1
vote
Equivalence of Entropy maximization principle and Clausius' Inequality
Maximum entropy (maximum configurations)
In thermodynamics, the equilibrim of a state is not determined by the maximum of entropy. Then when to apply the maximum entropy principle? … The "maximization" of the universal entropy is nothing to do with the equilibrium rule of a thermal state, and not related to the statistical maximum entropy rule. …
- 4,314
3
votes
Energy of magnetized vs not magnetized ferromagnet?
The equilibrium of a state is the constra-balance of two factor: internal energy and entropy. … But at high temperature, the entropy becomes more important. …
- 4,314
2
votes
Entropy for constant pressure
The answer to your question is NO.
Starting with the first law:
\begin{align}
\Delta Q &= d U + P dV \\
T d S &= dU + P dV \\
dU &= TdS - PdV \tag{1}
\end{align}
In equation (1), we read t …
- 4,314