That is " T e d iou s ", but without the vowels, of course! Recall from consideration of the Clausius Inequality that we defined entropy as follows:
Notice that all the properties on the right hand side of this equation T, P, v, u are measurable properties given in the tables, thus this differential equation can be solved numerically, leading to the table values of entropy s.
Engineering Thermodynamics by Israel
Urieli
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