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I improved the look of the plot. I added labels, a legend and made the lines clearer. Here's the Python code I used: <code><nowiki> import matplotlib.pyplot as plt import sympy f = 3 gamma = (f + 2) / f from sympy.abc import p, V, C adiabat = sympy.Eq(p*V**gamma, C) isotherm = sympy.Eq(p*V, C) fig, ax = plt.subplots() for equation, color, label in [ (adiabat, "k", "Adiabat"), (isotherm, "r", "Isotherm"), ]: needs_labels = True for C_value in np.logspace(0, 3, 15): q...
{{Information |Description=Superposition of Entropy and Temperature Contour Maps (on a P-V diagram). Isotherms are shown as red lines, and adiabats are shown as black lines. This image was made by AugPi. <br> (c) AugPi, 2004. Licensed to Wikimedia. <br