Crossword-Solution: ISENTROPIC 10 letters, 1 clue 🏆 scrabble score: 14

Now the question has become, Will an isentropic line, which starts from a point of the border-curve on the side of the liquid not far from the critical-point, remain throughout its descending course in the heterogeneous region, or will it leave the region on the side of the vapour? As early as 1878 van der Waals (_Verslagen Kon.

Their form resembles that of isothermals in so far as they show a maximum and a minimum, if the entropy-constant is below a certain value, while if it is above this value, both the maximum and the minimum disappear, the isentropic line in a certain point having at the same time dp/dv and d²p/dv² = 0 for this particular value of the constant.

This point, which we might call the critical point of the isentropic lines, lies in the heterogeneous region, and therefore cannot be realized, since as soon as an isentropic curve enters this region its theoretical part will be replaced by an empiric part.

When c_p/c_v = k (the limiting value of c_p/c_v for infinite rarefaction is meant) approaches unity, the isentropic curves approach the isothermals and vice versa.

But in this case all isentropic curves, if sufficiently prolonged, will enter the heterogeneous region.