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Subsection 0.6.1 Entropy in Thermodynamics
Definition 0.6.1 Clausius Entropy.
The Clausius entropy is a change in the entropy of a system due to some reversible process where it absorbs some amount of heat \(Q_\text{in}\) at a constant temperature \(T\text{:}\)
\begin{equation*}
\Delta S_\text{system} := \int_\text{rev}{\frac{d \, Q_\text{in}}{T}} .
\end{equation*}
